TERRO T600-300 Liquid Ant Bait and Ant Dust Includes TERRO Ant Dust & TERRO Liquid Ant Bait. TERRO Ant Dust kills ants (including fire and carpenter ants) on contact and provides 8 months of residual control. TERRO Ant Dust is waterproof and can be used indoors and outdoors. TERRO Liquid Ant Baits kill all common household ants in 6 convenient, ready-to-use bait stations. TERRO Liquid Ant Baits include patented design to eliminate handling of chemicals and prevents bait from drying out.