Woodstream T1900-6 Terro 16 OZ Aerosol Carpenter Ant & Termite Killer, For Use Indoors & Outdoors, Kills On Contact, Protects Up To 4 Weeks, Unique Crack & Crevice Applicator, Applies Foam For Maximum Protection, Will Not Stain. The precision tube directs the spray into wall voids and infested wood where pests live. Easy application in cracks and crevices. This item is non returnable and is a Hazmat item. For indoor and outdoor use. Provides quick killing action and residual control for up to four weeks.