Easy to apply from a safe distance, our Wasp Nest Destroyer Foam is an insecticidal foaming spray designed to kill wasps in their nests. For best results apply late evening or early morning when the wasps are less active. For best results, use it in the early morning or late evening, when the wasps are less active. Size: 300ml. Contains sufficient foam for around two-three treatments. Directions for use: Shake well before use. Keeping the can upright and standing at least two metres from the nest, direct and spray the foam at the nest entrance. Spray for eight seconds to thoroughly wet the nest, paying attention to the entrance. Do not stand directly underneath the nest and wear suitable clothing, should the wasps become active. For larger nests, a 12 second burst of spray should be applied. Stand well back from the treated area after application. If the nest entrance is not visible spray where the wasps activity is seen, such as through holes or gaps in walls etc. If wasp activity is seen again after treatment, which is not unusual, repeat the application.