The pest stop fumite insect killer works by releasing a smoke which kills all insects it comes into contact with within an enclosed area it is therefore ideal for thorough treatment of houses and storage areas against infestations of insects such as cockroaches and fleas it is also ideal for treating inaccessible areas such as roofs nooks and crannies and inside machinery it is supplied ready to use and does not require mixing or application equipment it is easy to use simply place on a firepr