Best Backpack Sprayer for Killing Pests, Weeds and Keeping a Healthy Garden

best backpack sprayer.

Pesticides and weeds come with the territory of keeping a garden. We review the best backpack sprayer to keep your garden free from these nasties

Planting and taking care of flowers, lawn, vegetables and trees can be rewarding. But to ensure that your plants stay healthy, it is important that you maintain the space. This is where a quality backpack sprayer comes in. It offers a quick and easy solution to applying insecticides, herbicides, fertilizer and pesticides. If you are serious about keeping your garden free from pest infestations and weeds, you will want to know what makes a great backpack sprayer. This is the perfect guide for you, particularly if you are short on time and only want the best. . We have reviewed the 10 best backpack sprayers and compiled a comprehensive guide on what to consider during your search.

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Field King Professional 190328 No Leak Pump Backpack Sprayer for Killing Weeds in Lawns and GardensField King Professional 190328 No Leak Pump Backpack Sprayer for Killing Weeds in Lawns and Gardens
Jane's Top Choice
Field King Professional 190328 No Leak Pump Backpack Sprayer for Killing Weeds in Lawns and Gardens
    Special Features
  • Internal No Leak Pump design is safer to use chemicals will not drip down your back
  • Durable, 21 inch poly wand with the highest quality Viton seals
  • Premium, lockable shut off with brass components and an in-line filter
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Great Mid Range Model
    Special Features
  • 4-Gallon translucent tank with 4-inch mouth opening for easy filling and cleaning
  • Compatible with common fertilizers, weed killers and pesticides
  • Cushion grip shut-off with three nozzles for a variety of applications
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Chapin 63985 4-Gallon 20-volt Wide Mouth Battery Backpack Sprayer, Powered by Black & Decker, 4-Gallon (1 Sprayer/Package)Chapin 63985 4-Gallon 20-volt Wide Mouth Battery Backpack Sprayer, Powered by Black & Decker, 4-Gallon (1 Sprayer/Package)
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Chapin 63985 4-Gallon 20-volt Wide Mouth Battery Backpack Sprayer, Powered by Black & Decker, 4-Gallon (1 Sprayer/Package)
    Special Features
  • Features a Black & Decker 20-volt Lithium Ion battery for up to 1.75 hours of continuous spraying
  • Deluxe Padded Shoulders for prolonged use
  • 35-40 psi with a 35-foot maxium horizontal spray stream
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Chapin 61800 4-Gallon ProSeries Backpack Sprayer For Fertilizer, Herbicides and Pesticides, 4-Gallon (1 Sprayer/Package)Chapin 61800 4-Gallon ProSeries Backpack Sprayer For Fertilizer, Herbicides and Pesticides, 4-Gallon (1 Sprayer/Package)
Chapin 61800 4-Gallon ProSeries Backpack Sprayer For Fertilizer, Herbicides and Pesticides, 4-Gallon (1 Sprayer/Package)
    Special Features
  • 4-Gallon translucent tank with 4-inch wide mouth opening for easy filling and cleaning
  • Compatible with common fertilizers, weed killers and pesticides
  • 3-Stage Filtration system with in-tank removable/cleanable filter
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Solo 425 4-Gallon Professional Piston Backpack Sprayer, Wide Pressure Range up to 90 psiSolo 425 4-Gallon Professional Piston Backpack Sprayer, Wide Pressure Range up to 90 psi
Solo 425 4-Gallon Professional Piston Backpack Sprayer, Wide Pressure Range up to 90 psi
    Special Features
  • High-performance piston pump for increased pressure capabilities of up to 90 psi and commercial shut-off valve
  • Viton seals in key locations ensure long service and durability
  • Interchangeable pump handle for left or right-hand operation and 48” nylon-reinforced high-pressure hose for extended reach
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Solo 473-P 3-Gallon Professional Backpack Sprayer, Pressure Range up to 90 psiSolo 473-P 3-Gallon Professional Backpack Sprayer, Pressure Range up to 90 psi
Solo 473-P 3-Gallon Professional Backpack Sprayer, Pressure Range up to 90 psi
    Special Features
  • Four-nozzle assortment for multiple spraying tasks: adjustable, fan spray, hollow cone, and jet stream nozzles
  • Viton seals in key locations ensure long service and durability
  • High-performance piston pump
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Field King Max 190348 Backpack Sprayer for Professionals Applying HerbicidesField King Max 190348 Backpack Sprayer for Professionals Applying Herbicides
Field King Max 190348 Backpack Sprayer for Professionals Applying Herbicides
    Special Features
  • Internal No Leak Pump design is safer to use - chemicals will not drip down your back
  • Durable, 21 inch stainless steel wand with the highest quality Viton seals for chemical resistance
  • Easy access pump, change seals in just minutes with no tools
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Chapin 61500 4-Gallon Euro Style Backpack Sprayer For Fertilizer, Herbicides, Pesticides and Common Household Cleaners, 4-Gallon (1 Sprayer/Package)Chapin 61500 4-Gallon Euro Style Backpack Sprayer For Fertilizer, Herbicides, Pesticides and Common Household Cleaners, 4-Gallon (1 Sprayer/Package)
Chapin 61500 4-Gallon Euro Style Backpack Sprayer For Fertilizer, Herbicides, Pesticides and Common Household Cleaners, 4-Gallon (1 Sprayer/Package)
    Special Features
  • 4-Gallon 4-inch wide mouth opening, translucent tank for easy filling and cleaning
  • 2-Stage filtration system, one filter at the top and another filter at shut-off
  • Poly shut-off with 2 nozzles: adjustable poly cone and fan tip
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    Special Features
  • Premium, lockable shut off with brass components and an in-line filter
  • Durable, 21 inch poly wand with the highest quality Viton seals for chemical resistance
  • Internal No Leak Pump design 
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Hudson 97154 SP1 Multi-Purpose Professional Bak-Pak SprayerHudson 97154 SP1 Multi-Purpose Professional Bak-Pak Sprayer
Hudson 97154 SP1 Multi-Purpose Professional Bak-Pak Sprayer
Special Features
  • Translucent 4 gallon poly tank to easily see liquid level

  • 70 PSI sealed diaphragm style pump

  • Locking shut-off valve with in-line filter


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Field King Professional 190328 No Leak Pump Backpack Sprayer for Killing Weeds in Lawns and GardensField King Professional 190328 No Leak Pump Backpack Sprayer for Killing Weeds in Lawns and Gardens

The Field Professional S-2190328 is a top rated backpack sprayer that will help you take control of your gardening chores. It has a 4-gallon capacity and boasts a patented pump that can provide up to 150 psi of pressure. The unit is also equipped with a pressure regulator that allows you to continuously spray at a constant pressure of 25psi, hence suitable for small to medium sized gardens.

The built-in paddles ensure that the liquid is well mixed while the agitator is capable of handling all kinds of chemical solutions without risk of damage. This sprayer is well made with brass internal components, a plastic tank and 21” poly wand fitted with Viton seals. You get four different nozzles for different application needs i.e. a brass adjustable nozzle, a foaming nozzle and two flat fan nozzles.

Pros:
  • Adjustable padded shoulder straps for comfort
  • In-line filter that helps reduce clogging
  • Smooth pump action
  • Pump pressurizes up to 150psi
Cons:
  • Considerably heavy when tank is full

The Chapin 61900 is a four gallon backpack sprayer with a 4” opening that allows for quick refills. The sprayer is made from a tough and durable poly. It is fitted with supportive back pad and two padded shoulder straps for added comfort when working. The ergonomic handle feels natural and relaxed in your hands.

This backpack sprayer is designed with a three stage filtration system, which means that it does a great job of keeping itself clean. You will be glad to know that the filter is removable, making it easy to clean the sprayer and minimize clogging of the nozzles. There is a pressure gauge on the handle that allows you to monitor the spraying pressure at all times.

Pros:
  • L and overextended stainless steel sprayer wand
  • Virtually non-leak construction
  • Large capacity of 4 gallons
  • Comfortable to use
Cons:
  • Sprayer handle doesn’t have a lot of flexibility
Chapin 63985 4-Gallon 20-volt Wide Mouth Battery Backpack Sprayer, Powered by Black & Decker, 4-Gallon (1 Sprayer/Package)Chapin 63985 4-Gallon 20-volt Wide Mouth Battery Backpack Sprayer, Powered by Black & Decker, 4-Gallon (1 Sprayer/Package)

If you are shopping for a motorized backpack sprayer, the Chapin 63985 is your best bet. The unit is powered by a Black & Decker 20-volt Lithium ion battery, which allows for 1.75 hours of continuous spraying before requiring a recharge. It comes with a 4-gallon tank and 35-40 psi of pressure, thus capable of producing a steady stream of 35 feet.

Another notable feature is that this sprayer comes with a translucent polyethylene tank and a carrying handle built into the cap. There is a cushioned grip shut-off that is equipped with a serviceable filter to prevent clogging of the nozzle. The deluxe padded shoulder straps provide comfort when you have to use the sprayer for extended periods of time.

Pros:
  • Offers good value for your money
  • Suitable for small to medium sized gardens
  • Powered by 20V battery that allows for 1.75 hours of continuous use
  • Can spray up to 35 feet
Cons:
  • Battery has a long charge time of 3.5 hours
Chapin 61800 4-Gallon ProSeries Backpack Sprayer For Fertilizer, Herbicides and Pesticides, 4-Gallon (1 Sprayer/Package)Chapin 61800 4-Gallon ProSeries Backpack Sprayer For Fertilizer, Herbicides and Pesticides, 4-Gallon (1 Sprayer/Package)

This is another 4-gallon backpack sprayer from Chapin International designed with durability and functionality in mind. It comes with a translucent tank that has a 4” opening for easy filling and cleaning. The unit can stand up well to weed killers, pesticides and fertilizers so you don’t have to worry about chemicals spilling onto your clothes.

Like most models in the ProSeries, this one comes with a 3-stage filtration system and an in-tank filter that can be removed for easy cleaning. This feature combination ensures optimum performance. You get padded shoulder straps for increased comfort when working for extended periods of time. The inclusion of brass nozzles and a poly wand means that your sprayer is long lasting and durable.

Pros:
  • 4” wide mouth for easy filling and cleaning
  • Cushion grip poly shutoff and three nozzles allow for increased versatility
  • High capacity of 4 gallons
  • Equipped with three stage filtration system
Cons:
  • Relatively heavy
Solo 425 4-Gallon Professional Piston Backpack Sprayer, Wide Pressure Range up to 90 psiSolo 425 4-Gallon Professional Piston Backpack Sprayer, Wide Pressure Range up to 90 psi

The Solo 425 4-Gallon Professional Piston Backpack Sprayer is designed to effectively handle fertilizers, disinfectants, formulations, pesticides and herbicides for plant protection. It comes with a high performance piston pump that has increased pressure capabilities of up to 90 psi. There is a commercial grade shutoff valve that has a lock on/off feature and minimizes hand fatigue.

This durable and long lasting backpack sprayer comes with Viton seals that are strategically placed. Its switchable pump handle can be used by both right and left handed individuals. Also included is a nylon reinforced hose that has a high pressure reach of 48” for optimal performance. You get four nozzles for different applications i.e. fan spray, adjustable, hollow cone and jet stream.

Pros:
  • Four nozzle attachment for different applications
  • 48” high pressure hose reinforced with nylon
  • Viton seals for durability and longevity
  • High pressure capabilities of up to 90 psi
Cons:
  • Straps have a tendency to snap
Solo 473-P 3-Gallon Professional Backpack Sprayer, Pressure Range up to 90 psiSolo 473-P 3-Gallon Professional Backpack Sprayer, Pressure Range up to 90 psi

The Solo 473-P is a professional backpack sprayer designed with a capacity of 3 gallons. While it doesn’t have the largest capacity, the sprayer offers a great feature combination. It effectively handles all kinds of chemical formulations for tree and plant protection. The unit comes with a high performance piston pump capable of producing up to 90 psi of pressure. The commercial shutoff valve has a lock on/off feature that helps minimize hand fatigue.

Also notable are the Viton seals, which are placed in key locations for longevity. The 48” high pressure hose is reinforced with nylon and allows for extended reach. We love the interchangeable handle as it is suitable for both right and left handed users. The unit also comes with four nozzle attachments for different tasks i.e. fan spray, jet stream, adjustable and hollow cone.

Pros:
  • Four nozzle attachments for multiple tasks
  • Increased pressure capabilities of 90psi
  • 48” nylon reinforced hose for extended reach
Cons:
  • Reduced capacity of 3 gallons
Field King Max 190348 Backpack Sprayer for Professionals Applying HerbicidesField King Max 190348 Backpack Sprayer for Professionals Applying Herbicides

The Field King Max 190348 Backpack Sprayer boasts an internal no leak pump design that ensures chemicals don’t drip down your neck. It is durably built and comes with a 21 inch stainless steel wand for extended reach. There are high quality Viton seals at key locations that do a great job of improving chemical resistance.

Another incredible feature of this backpack sprayer us the lockable shutoff, made from brass components. The inline filter helps prevent clogging while the easy access pump allows for change of seals in mere minutes. Like other models on this list, this one is offered with four nozzles including a foaming nozzle, brass adjustable and two flat fans.

Pros:
  • No leak pump design for safety
  • Equipped with 21” stainless steel wand for extended reach
  • Built-in paddles keep the chemicals mixed and ready to go
  • Comes with deluxe harness and folding handle
Cons:
  • Not the best for extremely large gardens
Chapin 61500 4-Gallon Euro Style Backpack Sprayer For Fertilizer, Herbicides, Pesticides and Common Household Cleaners, 4-Gallon (1 Sprayer/Package)Chapin 61500 4-Gallon Euro Style Backpack Sprayer For Fertilizer, Herbicides, Pesticides and Common Household Cleaners, 4-Gallon (1 Sprayer/Package)

The Chapin 61500 is a 4 gallon backpack sprayer from Chapin’s ProSeries line. It comes with a 4” opening that allows for easy cleaning and filling. The unit is designed to be compatible with common herbicides, pesticides, fertilizers and other formulations for plant protection.

This backpack sprayer is equipped with a two stage filtration system that includes a filter at the top and another one at the shut-off. This helps prevent clogging. There is a poly shut-off with two nozzles i.e. a fan tip and adjustable poly cone for multiple applications.

Pros:
  • Padded shoulder straps for comfort
  • 4-gallon translucent tank with 4” mouth opening
  • Affordable backpack sprayer
Cons:
  • Reduced number of nozzle attachments compared to other models

Roundup 190327 No Leak Pump Backpack Sprayer for Herbicides, Weed Killers, and Insecticides

Like most backpack sprayers, the Roundup 190327 has a 4-gallon capacity. The tank has a 4” opening and is easy to fill without spilling. This sprayer can build to a maximum pressure of 150 psi, but that requires a lot of pumping. It is best to spray at short distances and use a small number of pumps to avoid hand fatigue.

At 12 pounds, the Roundup 190327 is average in terms of weight. The good news is that it comes with cushioned shoulder straps for maximum comfort when using the unit for extended periods of time. The sprayer wand has an ergonomic, narrow handle for a firm grip and easy triggering of the spraying power.

Pros:
  • High pressure capacity of 150 psi
  • Comes with four nozzle attachments
  • Internal pump design prevents leakage
  • Removable filter for easy cleaning
Cons:
  • Expensive for a non-motorized sprayer
Hudson 97154 SP1 Multi-Purpose Professional Bak-Pak SprayerHudson 97154 SP1 Multi-Purpose Professional Bak-Pak Sprayer

Concluding our list for best backpack sprayers is the Hudson 97154, a great choice for priming your plants and taking control of pest invasions in your garden. It is a diaphragm pump operated model that gives a decent pressure level of 70 psi. The unit is made from sturdy materials and components including a professionally sealed pump. The Viton seals do a good job of preventing leakage.

It comes with a 20” brass wand that as an adjustable brass cone pattern nozzle. You also get three additional plastic flat fan nozzles. There is a locking shutoff feature valve within the inbuilt filter. Other features include a 47” industrial spray hose, ability to withstand different agrochemicals and ease of cleaning and storage.

Pros:
  • Brass wand and nozzle attachments
  • Equipped with steel pump handle
  • Offers good value for your money
Cons:
  • Not motorized

Types of Backpack Sprayers

Backpack sprayers are broadly categorized into two depending on the operating mechanism i.e. diaphragm and piston pumps.

Diaphragm Backpack Sprayers

These are quite expensive and the pumping of the handle creates pressure by moving the diaphragm. Unlike piston sprayers, these are more resistant to chemicals. This allows for use of powders and liquids. They require a lot of maintenance but the good news is that they will deliver maximum pressure when you need it.

Piston Backpack Sprayers

These utilize an up and down motion and are contained inside an internal cylinder. The pressure is created by pumping the lever, forcing the liquid down the wand. It is easy to spray the right amount of liquid since the level of pressure is good (about 90 psi). Piston sprayers are generally cheaper than diaphragm backpack sprayers and aren’t the best for use with highly abrasive chemicals.

Backpack sprayers are also categorized as either manual or motorized.

Manual Backpack Sprayers

These are the most popular backpack sprayers and only require one to operate a hand pump. Pumping the handle forces the pressurized liquid into the wand for spraying. While quite affordable, manual backpack sprayers can give hand fatigue if used for extended periods of time. They are a great option for someone who is spraying a smaller sized property or treating smaller infestations. Some models come with adjustable handles that allow for use by right and left handed individuals.

Motorized Backpack Sprayers

A motorized sprayer is an excellent option for someone treating a large area. Motorized backpack sprayers come with powerful batteries the get the job done faster as compared to manual model. There is minimal hand fatigue when used for extended periods of time. The main downside is that these sprayers are expensive. They also require extra maintenance and are bulky.

Other Factors to Consider During Purchase of Backpack Sprayer

Read Next: Best Lawn Aerator How to make sure you have the perfect grass

Nozzle Selection

The most common types of nozzles are direct stream, con, adjustable and fan. The type of nozzle chosen affects the area you will be able to spray as well as the pressure output. It also affects the type of spray, which may range from a steady stream to a fine mist. In addition to the type, you will want to pay attention to the type of material used for the nozzle. While cheap, plastic nozzles have a tendency to degrade over time. We recommend nozzles made from nickel, bronze or brass. They are more expensive and last for years, hence worth the extra cost.

Lockable Shut off Mechanism

This is usually placed on the handle and allows you increased control over the release of chemicals or liquids. This feature ensures that you never have to worry about the chemicals dripping when you don’t want them to.

PSI Pressure

The psi pressure is one of the most important factors to consider, particularly because it differs from one model to another. Most small scale backpack sprayers can reach up to 15-95 psi of pressure. Those that are designed for professional use can produce up to 150 psi of pressure. It is crucial that the pressure of the backpack sprayer is consistent with your needs and will continually spray the chemicals until you let go of the trigger. Keep in mind that the pressure is likely to decrease as the tank empties. Some models incorporate an internal pressure regulator to get around this problem and automatically control the pressure.

Spray Wand

This is the elongated shaft that allows you to spray the chemical onto the desired target. It comes handy when you need to apply chemicals and liquids in hard to reach places. Make sure that your spray wand is of good quality and allows for optimal user comfort.

Shoulder Straps and Harnesses

Improved shoulder straps and harnesses can make gardening chores easier. Despite most backpack sprayers being light, the weight increases drastically when they are full of chemicals. This is where shoulder straps and harnesses come in. They help distribute the weight evenly, thus ensuring that you don’t get too tired in the middle of a job. Look for models with adjustable and padded chest, shoulder and waist straps. The harness will come handy if you are treating a larger area with a bulky backpack sprayer.

Safety Considerations and Comfort

Features like spray wand grip and pumps are just a few of the factors that go towards minimizing hand fatigue when using backpack sprayers. But what else helps promote your safety and comfort? Contoured tanks have a better fit and adjustable padded straps that have high chemical resistance are important. Look for a model that has Viton rubber seals as these are resistant to swelling and softening due to chemicals. Ultimately, Viton rubber seals help prevent pump breakdown and leakage.

Warranty

A warranty is very important when it comes to the durability and longevity of a backpack sprayer. Everything wears out eventually and in the case of your sprayer, a good warranty will cover the defects. Not many warranties cover wear and tear so if you find something that does, don’t let it go. Don’t forget to check whether the company offers accessory kits that include anything that may need replacing like nozzles, O rings, hoses, valves etc.

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