Rentokil flea powder provides fast and effective control of fleas in the home it also kills ants wasps cockroaches woodlice and other insects the powder is easy to use simply puff around carpets or hard surfaces leave as long as possible and vacuum up one application is usually all it takes how to use shake well before use apply the powder lightly and evenly over surfaces of infestation eg carpets soft furnishings and pet bedding leave for at least 30 minutes then remove by vacuum cleaner repe