Wasp nest destroyer foam kills wasps in their nest from a distance applied from approximately 2m the 300ml of foam is enough to treat 3 large nests contains d phenothrin and tetramethrin kills wasps in the nest effective within 24 hours enough to treat 3 large wasp nests always read the label and product information before use use biocides safely this products is intended for use on wasps and wasp nests located outdoors