Answer Boric Acid Insecticidal Dust (Item #360) controls not only ants, but cockroaches, silverfish and fleas. This low-hazard boric acid dust is processed from borax, a naturally occurring substance widely distributed in the environment. The dust is long lasting and effective, even in small amounts, according to the company. Its 16-oz. bottle packaging is designed to be both economical and easy to use.
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