Buster Plughole Block Preventer (1x 500ml) provides total care of your plugholes and overflows to prevent the build-up of debris and keep your pipes flowing freely.Whether youre preparing food, washing the dog or cleaning dirty trainers, a lot of debris gets washed down your plugholes. If left untreated, it can build up over time and cause slow draining water, unpleasant odours and that dreaded blockage. While a glug of bleach might delay the inevitable, it doesnt reach the areas you need to clean to keep your pipes and overflows flowing freely. Thats where Buster Plughole Block Preventer steps in. The unique Diactive foam expands into every part of the pipe to deliver a powerful deep-down clean that dissolves debris, kills germs and eliminates odours. Its best used weekly to prevent the build-up that can lead to slow draining water, with each pack containing up to eight applications. Just squirt Buster Plughole Block Preventer into your plughole or overflow until the foam fills the pipe. Then leave it for 30 minutes and flush it through with lots of hot water. When it comes to plughole care, were the experts who get the job done.