TERRO Ant Killer Liquid Ant Baits (pre-filled) 6 Pack-- $1.50 + FS w/Prime at Amazon

6 convenient, ready-to-use bait stations with fast-acting formula
Liquid ant killer bait station kills all common household ants
No drips, spills or mess; for indoor and outdoor use. Place baits near ant trails or where ants are numerous. Use all 6 baits to enure sufficient supply for the ants.
Patented design eliminates handling of chemicals and prevents bait from drying out
Contains borax