Amazon has the 4-Count Raid Ant Killer Baits for $3.49 - 40% off (check “Save an extra” box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel anytime) = $1.92 with free shipping on $35+ or with Prime (extra 15% off for 5+ subscribe and save orders). Kills ants where they hide for up to 3 months.