I've used these for years, and they work every time.
Brad's Deals Editor Marisa,
This 12-Count Box of Terro Ant Baits drops from $13.08 to $9.36 at Amazon. This is the best price we found on these ant traps, and Amazon rarely drops the 12-pack under full price. The baits can be used indoors or outside. Prime members get free shipping. Non-members get free shipping at $25, otherwise it adds $5.99. Sales tax is charged in most states.