Termidor Foam by BASF contains the power and effectiveness of Termidor Termiticide Insecticide all in a convenient ready-to-use foam. Termidor Foam works on the toughest pests problems and is ideal for treating subterranean and drywood termites. It is also highly effective against carpenter ants and other wood-destroying insects. With an expansion rate of approximately 30:1, Termidor Foam forms thicker stronger cell walls that resist breaking and making the foam more durable and lasts 6X longer than other foams.