Terro Ant Killer is a widely used baiting system for controlling ant infestations, but safety concerns arise due to its active ingredient, borax. According to the Environmental Protection Agency (EPA), borax is not considered acutely toxic to humans but can cause mild irritation to the skin, eyes, and respiratory tract. However, the American Association of Poison Control Centers (AAPCC) reports that ingestion of large amounts of borax can lead to nausea, vomiting, and diarrhea. The National Pest Management Association (NPMA) recommends following product instructions carefully and keeping baits out of reach of children and pets.