BioAdvanced 700350A Termite Killer Home Perimeter Treatment
✅ PROS
- Kills termites on contact while creating a persistent soil barrier that works for up to 3 months
- Ready-to-spread granules require no mixing, spraying, or special equipment
- A single 9-pound bag covers 150 linear feet of foundation trench
❌ CONS
- Requires digging a 6-inch trench around your entire foundation — serious labor if you have a large home
- Rainfall above 1 inch may necessitate reapplication sooner than the 3-month label window
The Verdict
If you’ve seen mud tubes snaking up your foundation or found winged swarmers near your baseboards, you already know the panic. Termites cause billions in structural damage annually, and most homeowners discover them too late. The BioAdvanced 700350A Termite Killer Home Perimeter Treatment is a do-it-yourself barrier that promises to stop them without calling in a $500+ pest control company. But does a bag of granules actually hold the line? Here’s what 229 buyers (4.6 stars) discovered.
What’s in the bag
You get one 9-pound resealable bag of ready-to-spread granules. The active ingredient is 0.05% Fipronil — the same compound used in professional-grade termiticides like Termidor. That’s the headline here: you’re getting professional chemistry at homeowner pricing. The granules are designed to be watered into the soil after application, creating a treated zone that kills termites on contact and transfers through their colony.
The application reality check
This is not a “sprinkle and pray” product. The label requires digging a 6-inch deep by 6-inch wide trench around your entire foundation, applying the granules, then backfilling. For a 40-foot by 30-foot home, that’s roughly 140 linear feet of trenching. Homeowners with clay-heavy soil or buried utility lines will find this genuinely exhausting. One verified buyer noted, “The digging took me two full weekends, but the application itself took 20 minutes. Wish I had rented a trencher.”
Once the granules are in the soil, they need water activation. The product claims control within 3 months, with termites dying as they tunnel through the treated zone. The granules also kill ants, carpenter bees, and other listed perimeter pests, which several reviewers appreciated as a bonus.
Where it wins
The Fipronil concentration is the differentiator. Multiple reviewers who had previously used cheaper boric-acid powders reported this one actually stopped active infestations. One wrote, “Found live swarmers in my garage, applied this around the perimeter, and saw dead termites within two weeks. No more activity since.” The low-odor formula means you won’t gas yourself out, and the resealable bag stores easily for seasonal reapplication.
Where it falls short
The 3-month protection window is shorter than professional soil treatments, which often last 5–10 years. You’ll need to reapply at least twice a year for ongoing defense — and reapplication means re-digging or at least raking the soil. Heavy rain is another variable: more than an inch of rainfall can push the active ingredient deeper than the termite feeding zone, reducing effectiveness. The bag covers 150 linear feet, so larger homes will need multiple bags. At roughly $45–60 per bag (depending on current pricing), annual costs add up versus a one-time professional treatment.
Who should buy this
This is for the hands-on homeowner with an active termite problem and the willingness to do manual labor. It’s ideal if you’ve had spot treatments fail and want a real chemical barrier. It also suits those in areas with low-to-moderate termite pressure who want a DIY defense without monthly contracts. Skip it if you have a large, complex foundation, health concerns about handling chemicals, or simply no time for trenching — a licensed pest control operator is the better call.
FAQ
Does this kill existing termites inside the house? No. It creates a soil barrier for termites entering from outside. Active interior infestations require spot treatments or professional intervention.
How long should I wait before watering it in? Immediately after applying the granules to the trench, water them in thoroughly. The label recommends enough water to saturate the treated soil.
Is it safe around pets and children? Once watered in and covered with soil, the treated zone is low-risk. Keep pets away during application, and store the bag out of reach.
The Verdict
Buy it if: You have a manageable foundation perimeter and want professional-grade termite chemistry without a service contract. The Fipronil formulation is proven, and the granular format gives you precise control over application.
Skip it if: You can’t commit to trenching and twice-yearly reapplication, or if your home has a complex foundation with inaccessible areas. In those cases, pay a professional — it’s cheaper than a foundation repair.
Rating: 4.6/5 — Deducting half a star for the labor-intensive application and short protection window. But for the price-to-effectiveness ratio, this is the best DIY termite barrier available.
Prices and availability accurate as of the publish date. Always check the label for current application rates and follow local regulations.
Where to Buy
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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.