Perbio Choc is the strongest ready to use insecticide in the UK. It stops all flying and crawling insects including red mite - dead, and provides up to three months of control after a single treatment. UK`s strongest ready to use insecticide, Kills insects within seconds, Kills red mite and all other flying and crawling insects Effective for up to three months How to Use Perbio Apply 50 ml of product per 6.25 square metres of surface or spray short bursts directly at insects. Space treatment (fog/ulv): Apply 0.4ml of product per cubic metre of treatable volume. 1L FOR PROFESSIONAL USE ONLY ,,, BY PURCHASING THIS PRODUCT YOU CONFIRM THAT YOU ARE EITHER A TRAINED PROFESSIONAL OR WILL BE EMPLOYING A QUALIFIED PERSON TO APPLY THE PRODUCT.