Terro Liquid Ant Bait stations use the same proven liquid formula found in Terro Liquid Ant Killer - all in a convenient, pre-filled bait station. For indoor or outdoor use, Terro is the only liquid bait station available to consumers. The patented design eliminates handling of chemicals and prevents drying out. The active ingredient, Borax, is recognized by the EPA as being among the safest and least toxic chemicals available to consumers. It's fast-acting to eliminate the queen and entire colony. Safe for use in and around your home. 9 stations per package.