Home / PPE & Accessories / 6″ Rat Blocker6″ Rat Blocker Request a Quote Home / PPE & Accessories / 6″ Rat Blocker6″ Rat Blocker Request a Quote The Rat Blocker is an environmentally friendly system designed specifically to prevent rats from entering houses and commercial buildings through the drainage system and sewer pipes. By installing the Rat Blocker, the pipes are also protected from damage caused by rats. Rats that are already inside the drainage pipes or sewer system can get out without a problem but cannot return into the system. Every year hundreds of hotels, restaurants, canteens and cafés are closed due to rat problems resulting in loss of money and reputation. This could be avoided by installing a Rat Blocker. Rats are a source of contamination and they spread diseases. By blocking rat entry from drainage this makes it an inexpensive and environmentally friendly way of preventing rat attacks which in 95% of cases originate from the sewers.