20% OFF

HD4000 + FREE Neighbor's Envy (1 Gallon)

What Makes It Special

Up to 8 hours of non-stop battery-powered spraying

6 pro-grade nozzles for every job

FREE 1-Gallon Neighbor's Envy lawn treatment included

Double-padded straps keep you comfortable with zero fatigue

Adjustable pressure up to 90 PSI for total spray control

American family-owned, with responsive US-based customer support

Everything you need to treat your whole yard in one box:

PetraTools HD4000 Backpack Sprayer

4-gallon tank, battery-powered, up to 8 hours of runtime

Neighbor's Envy Liquid Fertilizer (1 Gallon)

FREE with this bundle, a $59.99 value

6 Interchangeable Nozzles

For fine mist through concentrated stream

Spray Neighbor's Envy evenly across the entire lawn using the HD4000, and reapply every 2-4 weeks. Best absorption happens when temperatures are below 85F.

Step 1

Fill the HD4000 tank with water and mix in Neighbor's Envy per the label ratio

Step 2

Spray evenly across the lawn, avoiding heavy overlap

Step 3

Reapply every 2-4 weeks for continued results

The HD4000's 4-gallon tank covers a full-size yard in one fill, so you get a professional sprayer and a premium lawn treatment together, instead of buying them separately.

HD4000 + FREE Neighbor's Envy (1 Gallon)

$199.99

$199.99 ~~$249.99~~

20% OFF

Shipping calculated at checkout.

The PetraTools HD4000 Battery Powered Backpack Sprayer, paired with a FREE 1-gallon Neighbor's Envy lawn treatment. Everything you need to spray and feed your whole yard in one box.

1 Year Warranty

Fast & Free Shipping

30-Day-Money-Back Guarantee

American-Owned

Still Deciding?

Stock up on sprayers, parts, and lawn care solutions without paying extra for shipping. Orders over $49 ship free anywhere in the U.S.

Ordered the wrong item or need help finding the right tool? Our team makes returns and exchanges easy, so you can get back to your project.

We stand behind our tools. If you’re not satisfied within 30 days, we’ll make it right with a full refund.

What Makes It Special

Up to 8 hours of non-stop battery-powered spraying

6 pro-grade nozzles for every job

FREE 1-Gallon Neighbor's Envy lawn treatment included

Double-padded straps keep you comfortable with zero fatigue

Adjustable pressure up to 90 PSI for total spray control

American family-owned, with responsive US-based customer support

Everything you need to treat your whole yard in one box:

PetraTools HD4000 Backpack Sprayer

4-gallon tank, battery-powered, up to 8 hours of runtime

Neighbor's Envy Liquid Fertilizer (1 Gallon)

FREE with this bundle, a $59.99 value

6 Interchangeable Nozzles

For fine mist through concentrated stream

Spray Neighbor's Envy evenly across the entire lawn using the HD4000, and reapply every 2-4 weeks. Best absorption happens when temperatures are below 85F.

Step 1

Fill the HD4000 tank with water and mix in Neighbor's Envy per the label ratio

Step 2

Spray evenly across the lawn, avoiding heavy overlap

Step 3

Reapply every 2-4 weeks for continued results

The HD4000's 4-gallon tank covers a full-size yard in one fill, so you get a professional sprayer and a premium lawn treatment together, instead of buying them separately.

Everything You Need. Spray Once, Feed Free.

8 HOURS OF BATTERY, ONE FULL YARD OF FEED

A single charge sprays 200+ gallons, plenty to cover your whole lawn with Neighbor's Envy in one trip around the yard.

COMFORTABLE ENOUGH TO FINISH THE WHOLE YARD

Double-padded straps and a cushioned back pad keep you going until every corner of the lawn gets its dose of Neighbor's Envy.

CONSISTENT SPRAY, EVEN FEEDING

A wide-mouth lid, sealed fittings, and a built-in screen filter keep Neighbor's Envy flowing evenly, so no patch of lawn gets left behind.

THE FEED IS ALREADY IN THE BOX

A free 1-gallon Neighbor's Envy lawn treatment (a $59.99 value) ships with every HD4000 in this bundle, ready to spray the moment it arrives.

Our Customer Videos

Spray Every Inch. Feed Every Root.

6 Nozzles Built To Spread Neighbor's Envy Evenly

Switch nozzles for the job at hand: a wide fan pattern for open lawn, a focused mist for tight corners, so every drop of Neighbor's Envy lands where it should instead of pooling in one spot.

Comfortable Enough To Cover The Whole Yard

Double-padded shoulder straps and a cushioned back pad mean you can spray from the front yard to the back without a break, so the whole lawn gets fed in one session.

Reach Every Corner, Feed Every Corner

An extendable wand and adjustable 40-90 PSI pump get Neighbor's Envy onto tall shrubs, fence lines, and far corners of the yard, not just the easy-to-reach patches.

One Bottle, One Trip, One Green Lawn

The free 1-gallon Neighbor's Envy that ships with this bundle is ready to spray the moment your HD4000 arrives. No separate purchase, no waiting around to get started.

How We Compare

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Customer Reviews

923

Product Type

Battery-Powered Backpack Sprayer + Free Fertilizer

Manual Pump Sprayer, Sold Separately

Tank Capacity

4 Gallons

2-3 Gallons

Battery Runtime

6 to 8 Hours

2-3 Hours

Battery Type

12V 8AH Lead-Acid

Non-Rechargeable / Manual Pump

Pressure

40-90 PSI Adjustable

Non-Adjustable Pressure

Hose Length

4-ft Hose

3-ft Hose

Nozzles Included

6 Nozzles

2-3 Nozzles

Comfort / Mobility

Padded Straps with Vented Back Pad

Basic Single Strap

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Frequently Asked Questions

How long does the battery last, and how many gallons can I spray per charge?

On a full charge, expect 6-8 hours of runtime, about 200+ gallons depending on your nozzle and pressure settings.

Does the free Neighbor's Envy work with the HD4000?

Yes. The HD4000's adjustable pump and wide-mouth tank make it easy to mix and apply Neighbor's Envy evenly across your whole lawn.

How long until I see results from Neighbor's Envy?

Most lawns show visible improvement within 1-2 weeks of the first application.

Is Neighbor's Envy safe for kids and pets?

Yes, once the treated lawn is dry.

Do the nozzles clog, and what should I check first if flow is weak?

Most weak-flow issues are simple fixes: rinse the nozzle tip, check the filter screen, and make sure the hose connection is snug and the tank is clean.

What can I safely spray with the HD4000?

It's built for common lawn and garden applications like fertilizers, herbicides, pesticides, and foliar feeds, and is chemical-resistant for that type of use.

What's the cleaning routine after spraying?

Empty the tank, run warm soapy water through the system (tank, hose, wand, nozzle), then finish with a clean-water flush before storage.

Is the sprayer comfortable for longer sessions?

Yes. Double-padded shoulder straps, a cushioned back pad, and a locking trigger help reduce fatigue on longer jobs.

The Petra Brand Promise

We deliver the power, durability, and reliability of commercial equipment without the complexity or the price tag. And when something goes wrong, we actually stand behind our promise - exactly what you'd expect from a family business.

30-Days Free Returns

30 Days to Decide

1 Year Warranty

We've got your back

24/7 Friendly Support

Real Humans. Real Help.

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HD4000 + FREE Neighbor's Envy (1 Gallon)