Home Improvement Questions? Ask a Handyman for Answers
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The safest way to get rid of ants is to put out a 50/50 mix of granulated sugar and Boric Acid powder in small containers where the ants frequent. Vacuuming up spiders is an effective way to get rid of them. They also hate the smell of peppermint so if you and your employees don't mind a minty smell spraying peppermint oil (20 drops in a pint spray bottle) around the areas where you have seen spiders will deter them. Try eucalyptus oil or tea tree oil if mint is unacceptable.