Nippon Wasp nest Powder 300g controls the development of nests and can be used indoors and outdoors. It is very important to not disturb the colony so it is advised to read the instructions very carefully and do not return to the nest until all wasp activity has ceased. Use the powder in the evening or on dull, cooler days when wasp activity is minimal. This pack contains 300g and the powder contains Permethrin.