Hatchwells Canovel Home Blitz! Plus Spray is a simple and highly effective way of killing Fleas, Flea larvae, House Dust Mites and other insects. It kills fleas and larvae, house dust mites and other flying/crawling insects. One treatment lasts for up to 6 months for adult fleas and flea larvae. It features a special nozzle that allows easy spraying onto carpets, etc. Made in Great Britain.