Best Flea Killer Treatment (For Yard and Outdoor)

This article features both the best chemical-based and natural flea killer treatments for your yard and other outdoor area.

Depending on the severity of flea condition in your outdoor yard, as well as the lifestyle your family does around the house in the outdoor area (i.e garden, lawn); one treatment method or flea killer product is more desirable than the other.  

1Wondercide Natural Flea and Tick Yard Spray Check Price
2Cutter Backyard Flea Control Spray Concentrate Check Price
3Spectracide Triazicide Flea Killer Concentrate Check Price
4Bayer Advanced Complete Flea Killer Granule Check Price
5Black Flag Flea & Tick Killer Yard Treatment Check Price
6Vet’s Best Flea & Tick Yard & Kennel Killer Spray Check Price
7Harris Food Grade Diatomaceous Earth Check Price

1) Wondercide Ready-to-Spray Natural Flea and Tick Yard Spray

This eco-friendly and biodegradable Flea and Tick Yard + Garden killer spray by Wondercide is a ready-to-use flea killer concentrate that can treat up to 5,000 square feet of yard space. Application is really easy as simple as attaching it to a hose, and spray to your yard and garden.

It developed with natural ingredients, using Cedar oil as its an active ingredient. Cedar oil works by blocking the octopamine in fleas and ticks, repelling these tiny pest with its presence and killing them on contact.

It’s designed to kill and repel adult fleas and ticks, while preventing fleas and ticks’ egg, larvae, and pupae from developing into adults. What we also love about the Wondercide killer is that it also provide super effective repelling and killing effect against mosquitoes, ants, and other common nuisance pests found in the yard.

Application areas – safe for use on patio, lawn, garden, kennel, garden, around fish ponds, swimming pools, park with pets and playgrounds.

This great alternative to chemical based pyrethrin and permethrin base yard killer products is not only safe around kids and pets, it also does not harm plants or beneficial insects (ie bees).

Tip: Generally, a routine treatment application of between 30 to 45 day is advisable.

  • Treats up to 5,000 sq ft area
  • Does not cause harm to beneficial bugs
  • Doesn’t leave an oily residue
  • Great cider smell
  • Non-toxic & Easy to use
  • Also works on other pests
  • Resistance to rain
  • Safe even under wet weather
  • Made in USA
  • Might attract carpenter bees

2) Cutter Backyard Flea Control Spray Concentrate

The Backyard Flea Control Killer Spray treatment by Cutter features active ingredient Lambda-Cyhalothrin that provides a wide coverage of up to 5,000 sq ft of area outdoor; and each application can last up to 12 weeks even after rain.

The improved quick flip bottle design allows easy application, and other than fleas, it also works well on killing ants and keeping mosquitoes away.

The hose-end sprayer allows quick and easy application on landscapes, yard, lawns and other outdoor surfaces. Your pet and child can enter the treated area as soon as it’s dried.

Application – 1) Shake bottle well and connect the spray nozzle to a garden hose (ensure safety switch is in the ‘off’ position). 2) Remove and discard safety tab before turning on water. 3) Aim nozzle at site, turn switch backwards and the water automatically mix with the concentrate. Spray until treatment area is wet. 4) Once done, simply push the container’s switch forward and turn off water point.

Tip: Begin treatment from the opposite end of the water point and work your way back to the faucet (to avoid coming into contact with the treatment).

Tip 2: Spray in a sweeping motion, overlap the treated areas slightly to ensure full coverage.

>> Available in these sizes: Pack of 1, Pack of 2 & Pack of 6

  • Made in USA
  • Up to 4 weeks of control
  • Treats up to 5,000 sq ft
  • Easy application (connect and spray)

3) Spectracide Triazicide Flea Killer Concentrate (For Lawns & Landscapes)

This Lawns and Landscapes Flea Killer Concentrate by Spectracide Triazicide kills pests that are both above and below the ground surface. It provides up to 5,000 sq ft of coverage to protect your lawn’s vegetable, flowers shrubs and trees.

On top of fleas and ticks, it also kills over 250 of listed pests by contact. Each application can last up to 3 months of killing effect.

>> Available in these versions: Concentrate & Ready-to-spray

  • Kills over 260 types of pests on contact
  • Up to 3 months of control
  • Covers up to 5,000 sq ft
  • Kills pests both above and under the ground

Related article: Best Flea Fogger & Bomb

4) Bayer Advanced Complete Flea Killer Granule (for Soil & Turf)

The Bayer Advanced Flea Killer Treatment Granule features a two-way formula that provides control for both surface and soil pests.

It kills surface pests within 24 hours and pests inside the soil for up to three months. On top of flea and tick, it also works on most common lawn pests like grubs, crickets, ants and more.

>> Available in these version: Concentrate

  • Controls both soil and surface and pests
  • Fast killing action
  • Up to 5,000 sq ft coverage

5) Black Flag Flea & Tick Killer Yard Treatment Concentrate Spray

The Black Flag Flea and Tick Killer is specially formulated to kill fleas and ticks outdoor, around the house perimeters, your yard, deck and patio.

Each application can last up to 4 weeks, covering up to a wide 5,000 sq ft of area.

Direction – 1) Shake container well before connecting nozzle to a garden hose. 2) Turn on water and begin treatment by pointing spray nozzle toward treatment site and turning the switch ‘on’. 3) Begin treatment from the furthest point and work your way to the water point to prevent stepping on treatment. 4) Once done, turn switch forward to cut off spray before turning the water faucet off.

Note: When not in use, ensure switch is full turned off. Place in cool area and away from direct sunlight or other heat source.

  • Up to 12 weeks of killing
  • Covers up to 5,000 sq ft
  • Also kills other common pests

>> Bonus

6) Vet’s Best Flea & Tick Yard & Kennel Killer Spray

The Vet’s Best Flea and Tick Yard and Kennel Spray Killer features plant-based formula that kills flea eggs, fleas and ticks on contact. On top of flea and ticks, it is also effective against mosquitoes.

The product uses essential oils and natural ingredients such as eugenol and peppermint oil that does not harm the shrubs, trees and flowers in your yard.

The formula is also non-staining and each treatment can cover up to 4,500 sq feet of protection.

  • Natural and plant-based ingredients
  • No fragrance added
  • Non-staining formula
  • Made in USA
  • The lid is not always on tight

7) Harris Food Grade Diatomaceous Earth (With Free Powder Duster)

The Harris Diatomaceous Earth (DE) is a food grade product made of 100% ground freshwater DE without fillers. It is listed with the OMRI for organic use and every purchase comes with a powder duster with applicator extension to allow for easy application even in narrow area.

As with other DE, they kill fleas by contact or ingestion from the pest. DE is best used around the house to act as a protective layer for fleas thinking of entering.

Sidenote – The company donates $1 to the Etowah Valley Humane Society charity for every $10 made in profit.

[May: Although some of the DE might get blown by the outdoor wind, comparing to indoor, there’s no need to worry about any mess.]

Tip: Check the weather forecast before applying.

  • Comes with Powder Duster
  • DE has a wide application
  • Chemical free & Organic
  • Might be blown away under strong wind condition
  • Not as effective when soaked in the rain

Related Article: Best Flea Spray for Home

Final Words

One final trick for those with large outdoor yard or lawn area is to mow regularly. Researchers have found that Fleas and Ticks prefer areas under the trees with many fallen leaves, and in the bushes where everywhere is tall weeds and grass that trap moist.

As with most pest situations, the most effective way to eliminate Flea and Ticks in the yard or in the outdoor area is to find the root of it; and work from there.

Let us know in the comment if you have tried any flea killer and treatment products in your garden or yard. Does it work? What did you learn from it?