Best Pull-Behind Lawn Sprayers

The Chapin 97701E 25-gallon tow-behind is the best pull-behind lawn sprayer for most yards, with the Agri-Fab 45-0588 as the pick if you want a boom and the highest listed pump pressure, and the FIMCO 5303649 as a strong alternative for ATV owners who want a three-nozzle boom. All three are 25-gallon, 12-volt-pump trailers that hitch to a lawn tractor, zero-turn with a hitch plate, ATV or UTV, and all three cover a half acre or more per fill.

A pull-behind sprayer sits between a backpack and a full farm rig. It carries 15 to 25 gallons of liquid fertilizer, herbicide or insecticide on a small trailer, pumps it with a 12V diaphragm pump wired to your tractor’s battery or a small onboard battery, and delivers it through a boom, a wand or both. The right model depends on tank size, how you apply (boom for broadcast, wand for spot work), what you tow with, and how fast you drive. This guide covers the specs that matter, shows the math for choosing nozzles and estimating fills, and compares seven current 25-gallon models.

Our top picks

Top pickNorthStar 31-Gallon Tow-Behind Boom/Spot Sprayer

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Also greatNorthStar 21-Gallon Tow-Behind Boom/Spot Sprayer

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Also greatMaster Manufacturing SNO-11-015A-MM 15 Gallon Pull-Behind New

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Also greatMaster Manufacturing 25 Gallon Deluxe Lawn Pull-Behind

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Quick picks

• Best overall for most yards: Chapin 97701E. 25-gallon poly tank, 2.5 GPM diaphragm pump, 40-60 psi, triple filtration, three nozzles, 12-inch pneumatic tires.
• Best with a boom built in: Agri-Fab 45-0588. 25 gallons, a 100 psi, 2.2 GPM diaphragm pump and a listed 60-inch boom with 90-inch spray width.
• Best value among boom models: Agri-Fab 45-0616. 25 gallons, a 1.6 GPM, 100 psi pump, boom and spray wand included.
• Best for ATV use with extra reach: Chapin 97714, the 97701E platform plus a two-nozzle boom.
• Best alternative brand: FIMCO 5303649. 25 gallons, a 2.4 GPM, 60 psi pump and a three-nozzle boom.
• Best for wide coverage on open lawns: Master Manufacturing 25-gallon Deluxe, listed at a 2.2 GPM, 60 psi pump with a 7-foot broadcast swath.
• Best entry-level option: Grass Guardian 25-gallon, listed at 1.1 GPM with a 7-foot swath.

How we chose

This guide is research-based. We compared manufacturer specification pages, retailer listings and the way each sprayer is described for use, and weighed them on tank size, pump type and flow, pressure, boom or swath width, hitch compatibility, filtration and construction. Listings sometimes disagree. For instance, boom width on one Agri-Fab model appears as both 30 inches and 60 inches across sources, so we note the discrepancy and recommend confirming it in the manual before buying. Where a spec could not be confirmed, we describe the spec class instead of quoting a number.

Spec criteria that decide the purchase

Tank size

Tow-behind tanks usually run 15 to 25 gallons, with larger 30- to 60-gallon tanks on ATV rigs. A 25-gallon tank holds about 208 pounds of water (8.3 pounds per gallon), which is a real load for a lawn tractor. Bigger tanks mean fewer refills, but heavier trailers, longer stopping distances and more tongue weight on slopes. For lawns up to an acre, 25 gallons is the common balance.

Pump type

Almost all consumer pull-behinds use a 12V diaphragm pump. It is self-priming, tolerates most lawn chemicals and shares power with your tractor battery through alligator clips or a plug. Gas-engine pumps exist for farm-scale rigs and run independently of a battery, but they add noise, weight and fuel handling. For residential lawns, 12V is the practical choice. Choose gas only if you need higher pressure or you spray from a vehicle with no accessible 12V source.

Pump flow and pressure

Pump ratings run from about 1 to 2.5 GPM at 40 to 100 psi. A bigger number does not automatically mean faster coverage, as the worked example below shows. Your nozzle output and ground speed set the rate you apply. The pump needs enough flow to feed the nozzles, supply the bypass that agitates the tank and run a spray wand if you use one.

Boom width and nozzles

Boom width drives coverage. A 7-foot swath covers roughly twice the area per pass of a single-nozzle wand spray. Three-nozzle booms are common, and flat-fan tips give an even pattern. Booms with a spray-tip overlap prevent stripes. Wands add flexibility for spot spraying, edges and tight corners.

Hitch and compatibility

Most trailers have a standard drop pin hitch that fits lawn tractors, ATVs and UTVs. Check your mower’s maximum towing weight, which is often a few hundred pounds, and remember that a full 25-gallon tank plus trailer can approach or exceed that. Zero-turn mowers often need a hitch plate and have lower tow ratings, so verify with the mower manual. Pneumatic tires roll better over uneven lawns than hard plastic wheels.

Filtration

Clogged nozzles ruin an application. Look for a basket filter at the fill opening, an in-tank or pump-inlet filter and a line filter before the nozzles. Triple filtration, as on the Chapin 97701E, reduces clogs from powder residue and debris.

Material and chemical compatibility

Poly tanks resist most fertilizers, herbicides and insecticides and do not rust. Check seal and hose compatibility with the product, especially with solvent-based formulations, and rinse thoroughly after use.

Worked example: nozzle output, rate and fills

This logic shows how to size the setup for your lawn and why pump GPM is not the main constraint.

1. Find your target rate. Many liquid lawn products specify an application rate. Suppose the label calls for 1 gallon of finished spray per 1,000 square feet, which equals about 43.6 gallons per acre (GPA).
2. Use the rate formula. GPA = 5,940 x GPM / (MPH x swath width in feet). Rearranged, total nozzle GPM = GPA x MPH x swath / 5,940.
3. Plug in the setup. At 4 mph with a 7-foot swath and a target of 43.6 GPA, the total nozzle output is 43.6 x 4 x 7 / 5,940 = about 0.21 GPM. That is the combined output of all nozzles on the boom.
4. Compare to the pump. Even a pump listed at 1.1 GPM can supply 0.21 GPM to the boom. The rest returns to the tank as bypass and agitates the mix. In other words, a 2.5 GPM pump does not make you spray faster, it just gives more bypass and wand flow.
5. Count the fills. A 25-gallon tank at 43.6 GPA covers 25 / 43.6 = about 0.57 acre per fill. One acre needs about 1.75 fills.
6. Estimate the time. At 4 mph and a 7-foot swath, theoretical coverage is 4 x 5,280 x 7 / 43,560 = about 3.4 acres per hour. At roughly 70 percent efficiency for turns and overlap, about 2.4 acres per hour. A half-acre lawn takes about 12 to 15 minutes of driving, plus loading.
7. Check the weight. A full tank is about 208 pounds of liquid, plus the trailer. Compare the total with your mower’s tow rating before you hitch up.

The takeaway: choose nozzles and speed by the label rate, and choose the sprayer by tank size, hitch fit, boom width and filtration. Beyond that, pump flow only matters when you also use a hand wand, which pulls from the same pump.

Comparison table

The picks

Chapin 97701E: best overall for most yards

Specs: 25 gal poly tank, 6-inch fill opening · 2.5 GPM 12V diaphragm pump · 40-60 psi · 0.4-0.5 GPM spray rate through the included nozzles · three nozzles (adjustable brass, poly cone, poly fan) · triple filtration · powder-coated steel frame · 12-inch pneumatic tires · standard hitch for ATV, UTV or lawn tractor · 20-inch wand with 180-inch hose.

Best for: Homeowners with one to three acres who want a proven design, good filtration and the flexibility to add a boom or spot-spray with the wand.

Skip if: You want a boom included in the box. The boom is an optional add-on for this model.

• Pros: Triple filtration reduces clogs; strong pump for wand use and agitation; large fill opening; pneumatic tires roll smoothly over turf; steel frame.
• Cons: Boom sold separately; a full tank is a heavy load on small mowers; battery clips need good connections.

Agri-Fab 45-0588: best with a boom and higher pressure

Specs: 25 gal poly tank · 2.2 GPM 12V diaphragm pump · 100 psi · listed 60 in boom with 90 in spray width · hand wand · battery and charger not included.

Best for: Lawn owners who want broadcast coverage with a wide boom and a pump with pressure headroom for the wand.

Skip if: You need a battery included, or you want a model with documented triple filtration.

• Pros: Wide listed spray width; higher pressure rating than the 60 psi class; boom and wand give both broadcast and spot options.
• Cons: Battery not included; confirm boom and swath figures, since sources differ.

Agri-Fab 45-0616: best value among boom models

Specs: 25 gal · 1.6 GPM, 100 psi pump · boom and spray wand included · boom width listed differently across sources, so check the manual.

Best for: Budget-minded homeowners who want a boom and a wand in one package.

Skip if: You plan to run a wand and boom together at high flow; the smaller pump has less margin.

• Pros: Includes both boom and wand; solid pressure rating.
• Cons: Lower flow than the 2.2 to 2.5 GPM models; conflicting width listings.

Chapin 97714: best for ATV users who want a boom

Specs: 25 gal poly tank platform · 2.5 GPM 12V diaphragm pump · two-nozzle boom attachment · alligator-clip power connection · confirm full specs on the manufacturer page.

Best for: ATV and UTV owners who want the 97701E design with a boom ready to spray.

Skip if: You want a three-nozzle boom or a wider swath.

• Pros: Same strong pump and chassis as the 97701E; boom included.
• Cons: Two-nozzle boom is narrower than some competitors; confirm swath width before buying.

FIMCO 5303649: best alternative brand

Specs: 25 gal · 2.4 GPM 12V pump · 60 psi · three-nozzle boom · confirm full specs on the manufacturer page.

Best for: Buyers who like FIMCO’s service network or already use FIMCO sprayers and parts.

Skip if: You want a higher-pressure pump or a wider spray swath.

• Pros: Three-nozzle boom for fast broadcast; strong pump flow; familiar farm-sprayer brand.
• Cons: Pressure is in the 60 psi class; verify trailer width and hitch fit.

Master Manufacturing 25-gallon Deluxe: best for wide, open lawns

Specs: 25 gal · 2.2 GPM 12V pump · 60 psi · 7 ft broadcast swath · confirm full specs on the manufacturer page.

Best for: Open lawns and pastures where a wide swath saves passes.

Skip if: Your lawn has many tight beds and obstacles that make a wide boom awkward.

• Pros: Wide swath; steady pump; works for fertilizer and weed control.
• Cons: Wide boom takes more care near fences and trees.

Grass Guardian 25-gallon: best entry-level option

Specs: 25 gal · 1.1 GPM 12V pump · 7 ft swath · confirm full specs on the manufacturer page.

Best for: Occasional use on a one-acre lawn where you want the lowest ownership cost.

Skip if: You plan to use the wand heavily, run higher-pressure tips or spray several acres a week.

• Pros: Lower ownership cost; a 7-foot swath on a 25-gallon tank.
• Cons: Lower pump flow; less durable for frequent use.

Match the sprayer to your situation

Set up and calibrate before you spray

1. Check the hitch. Confirm your mower or ATV’s tow rating against the full trailer weight. A 25-gallon tank holds about 208 pounds of liquid.
2. Wire the pump correctly. Connect the red clip to positive and the black clip to negative on a charged battery, with the engine running to avoid draining the battery. Keep wires clear of wheels and hot parts.
3. Calibrate with water. Fill with plain water, mark a 100-foot test strip, and drive it at your planned speed while the boom sprays. Collect output for a minute, then compare to your target rate using the GPA formula.
4. Choose nozzles. Flat-fan tips with the right output and a 30-to-50 percent overlap give an even pattern. Change tips if the rate is too high or low.
5. Mix and fill carefully. Follow the label for mixing order, fill part of the tank with water first, add the product, then top up. Use the fill basket filter to catch debris.
6. Drive at a steady speed. Keep the same speed you calibrated at. Slowing down over-applies product and speeding up under-applies it.
7. Shut the boom off before turns. Use the shut-off valve at the end of each pass to avoid double dosing.

Safety

• Follow the product label. Wear the gloves, eyewear and clothing it requires, and respect its limits on weather, re-entry and pets or children.
• Watch the wind. Do not spray in wind above the label limit. Drift can damage neighbors’ plants and gardens.
• Mind the slope. A 200-pound liquid load shifts as you drive. Avoid steep slopes, turn gently and never drive across a slope with a full tank unless the mower manual allows it. A sloshing load can push a light mower on downhill sections.
• Do not exceed the towing rating. Overloading a mower hurts braking and can damage the transmission.
• Keep people and pets clear during application and until the product has dried, as the label states.
• Handle the battery carefully. Keep clips off one another, never let them touch metal frame parts while connected, and disconnect the pump when finished.
• Rinse thoroughly. Flush the tank, lines, boom and filters with clean water after each use and spray the rinse onto the treated lawn according to the label. Dedicated sprayers prevent cross-contamination, so avoid switching between herbicide and fertilizer without a full flush.

Maintenance

1. Clean the tank filter basket, in-line filter and nozzle screens after every use.
2. Run clean water through the pump and lines, then drain the system.
3. Store indoors out of freezing weather. Water left in the pump can crack the diaphragm.
4. Inspect hoses, clamps and wiring each season and replace cracked parts.
5. Keep tires at the recommended pressure for steady boom height.

FAQ

What size pull-behind sprayer do I need for my lawn?

A 25-gallon tank suits most lawns up to about an acre. At 1 gallon per 1,000 square feet, one fill covers about 0.57 acre, so a 1-acre lawn needs about 1.75 fills.

Choose a bigger tank for several acres, and a smaller 15-gallon model if your mower has a low tow rating or you only spot treat.

Is a 12V pump or a gas pump better?

A 12V pump is better for most homeowners because it is quiet, simple and powers from the tractor battery. Gas pumps suit larger rigs that need higher pressure or have no battery access.

Gas pumps add fuel handling, noise and weight. For lawn fertilizer and weed control at residential scale, 12V is sufficient.

How wide a boom do I need?

A 7-foot swath suits most lawns and covers about twice as much ground per pass as a single nozzle. Narrower booms work better around obstacles, wider ones suit open turf.

Check the listed swath for your model, since some listings differ. A wide boom is only useful if your mower can tow the load and you can turn around obstacles.

Can my lawn tractor pull a 25-gallon sprayer?

Often yes, but you must check the tow rating in your mower manual. A full 25-gallon tank holds about 208 pounds of liquid, plus the trailer and frame.

Zero-turn mowers often have lower tow ratings and need a hitch plate. If the combined weight exceeds the rating, use a smaller tank or fill it only part way.

How do I choose nozzles for a boom sprayer?

Use the formula total nozzle GPM = GPA x MPH x swath / 5,940. For a label rate of 43.6 gallons per acre at 4 mph and a 7-foot swath, you need about 0.21 GPM total.

Divide that total by the number of nozzles, pick tips that deliver that output at your pressure, and confirm by catching output during a water-only test.

Does a bigger pump spray faster?

No. Application speed depends on nozzle output, ground speed and swath width. A bigger pump adds bypass for agitation and flow for a wand, not faster broadcast coverage.

A 1.1 GPM pump can easily supply a boom that needs about 0.21 GPM. Extra pump flow mostly matters when you use a hand wand at the same time.

Can I use the same sprayer for fertilizer and herbicide?

You can, but it is safer to dedicate a sprayer to one use. Herbicide residue can damage plants if it carries into a fertilizer or fungicide application.

If you must switch, flush the tank, pump, lines, boom and filters with clean water several times, and follow any cleaning instructions on the product label.

How do I store a pull-behind sprayer for winter?

Rinse the tank and lines, drain all water, and store the sprayer indoors out of freezing temperatures. Water left in the pump can freeze and crack the diaphragm.

Disconnect the battery clips, clean the filters and nozzle screens, and keep hoses uncoiled enough to drain. Check clamps and seals before the next season.