Harris Diatomaceous Earth Crawling Insect Killer Powder 9 oz for Cockroaches Fleas Ants Bed Bugs
Harris Diatomaceous Earth Crawling Insect Killer Powder, 9oz
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Harris Diatomaceous Earth Crawling Insect Killer Powder, 9oz

2,217 ratings

Key item features

  • Effective Insect Killer: Effectively kills a wide range of crawling insects including ants, bed bugs, cockroaches, fleas, earwigs, silverfish, and spiders.
  • Natural Composition: Made from 100% pure freshwater diatomaceous earth with no additives, safe for use around kids and animals when used as directed.
  • Mechanical Action: Works by dehydrating insects on contact through physical abrasion, leading to rapid dehydration and death.
  • Precise Application: Features a built-in puffer tip for targeted application in tight spaces and cracks, ensuring no waste and no mess.
  • Long-Lasting Protection: Remains effective as long as the powder stays dry, suitable for use in basements, attics, gardens, garages, and entry points.
  • Indoor & Outdoor Use: Ready-to-use powder insecticide works both indoors and outdoors to guard against nuisance pests.
  • Non-Resistant Solution: Insects cannot become immune to diatomaceous earth, ensuring consistent effectiveness.
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Specs

Pest type, Crawling Insects, PestsPest bait, trap & killer type, Insecticide, BaitRec location, OutdoorCoverage area, 200 sq ftForm, PowderTreatment effective time, 6 months

About this item

Product details

Harris Diatomaceous Earth Crawling Insect Killer, 9 oz., kills cockroaches, fleas, ants, bed bugs, silverfish and more with diatomaceous earth. This ready-to-use powder insecticide works indoors and outdoors to guard against nuisance pests. Bed bugs, ants, roaches, fleas and silverfish that come in contact or ingest this powder die within 48-hours. Unlike liquid or spray products, insects can’t become immune to diatomaceous earth. Using the puffer-style 9-ounce bottle as an applicator, apply powder in cracks and crevices and other areas where insects are found. Not intended for human consumption. Always follow label instructions and keep out of reach of children.
  • POWERFUL CRAWLING INSECT KILLER
  • Effectively kills a wide range of crawling insects including ants, bed bugs, cockroaches, fleas, earwigs, silverfish, and spiders. A natural solution for indoor and outdoor pest control without harsh chemicals.
  • 100% DIATOMACEOUS EARTH WITH NO ADDITIVES 
  • Made from pure freshwater diatomaceous earth, this powder is safe for use around kids and animals, when used as directed. A trusted choice for eco-conscious households.
  • KILLS INSECTS MECHANICALLY, NOT CHEMICALLY 
  • Works by dehydrating insects on contact through physical abrasion. Insects walk through the powder and the fine particles damage their exoskeleton, leading to rapid dehydration and death.
  • BUILT-IN PUFFER TIP FOR PRECISE CONTROL
  • The included powder duster features a narrow, easy-to-use puffer tip that allows for targeted application in tight spaces and cracks. Apply just the right amount of diatomaceous earth exactly where insects hide—no waste, no mess.
  • LONG-LASTING INDOOR & OUTDOOR PROTECTION 
  • Remains effective as long as the powder stays dry. Use in basements, attics, gardens, garages, and entry points to create a barrier against future infestations.
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Specifications

Pest type

Crawling Insects, Pests

Pest bait, trap & killer type

Insecticide, Bait

Rec location

Outdoor

Coverage area

200 sq ft

Directions

Instructions

Sprinkle in invested areas.

Warranty

Warranty information

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Warnings

Customer ratings & reviews

4.4 out of 5 stars
stars
2,217 ratings437 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars72% (1,591)
  2. 4 stars12% (264)
  3. 3 stars8% (175)
  4. 2 stars3% (62)
  5. 1 star6% (125)

Reviews summary

Pros

  • : The item is priced lower than comparable retailers.
  • : Features an intuitive interface for easy operation.
  • : Safe for use around pets and children.
  • : Quickly reduces or eliminates ants in various areas.
  • : Helps eliminate crawling bugs and prevents home entry.

Neutral

  • : Effective against some, but struggles with others.
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Showing 1-3 of 437 reviews

Sep 16, 2026
Reviewer name: AT
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Took care of my minimal ant issue

Did not have a significant amount of ants but after one use, the ones I had are gone

Helpful?3W1XAIIE1DC71687201764
Oct 27, 2026
Reviewer name: Walmart customer
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

I purchased this because we seen a roach. My heart drop and started cleaning. I then put Mr Harris in cracks away from baby's and pets three day later no roach was seen. Roaches come back every 3/4 months so I bought extra and marked the calendar. Cheaper than having it professionally done with worse chemicals.

Helpful?3W1XAIIE1DC71687201764
Jun 7, 2026
Reviewer name: Manu
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Effective and practical product, I loved it!

I've been impressed with Harris Diatomaceous Earth Crawling Insect Killer Powder. What stands out is that it provides an effective, non-chemical approach to controlling crawling insects. The powder is easy to apply in cracks, along baseboards, and around entry points where pests tend to travel. I noticed that consistency is key—once applied in the right areas and left undisturbed, it continues working over time rather than providing only a quick fix. The 9oz bottle is convenient for treating targeted areas, and a little goes a long way. This product is a great option for anyone looking to supplement their pest control routine with a long-lasting solution. It requires some patience, but the results make it worthwhile. Overall, it's an effective and practical product that delivers good value.

Helpful?3W1XAIIE1DC71687201764
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