Included: 4 tips, 4 plungers, 4 reservoirs Contains fipronil, the active ingredient of choice for fast, effective ant control Thicker consistency enables it to stay where it's applied – even on vertical applications Offers broad-spectrum ant control on notoriously difficult-to-control species including Argentine ants, carpenter ants and odorous house ants Formulated for ants trophallaxis, which allows foraging ants to return to the colony and feed the bait to larvae and the queen(s) so entire colony is killed