You would probably be horrified if you entered your bathroom to see a rat grinning at you from the toilet bowl, a feeling that is likely to be shared by pretty much every homeowner in the country. The idea arouses not only fear and disgust, but concerns for your family’s health.
Rats are great climbers and swimmers, and can hold their breath for long enough that it allows them to travel from one location to another through sewage pipes and drains.
You might not have heard of many instances of people finding a rat in their toilet bowl when they open the lid, because in the UK it is fairly rare, but it is not impossible. With this in mind, many householders have taken sensible prevention measures that stop rats from coming through the sewer pipe, and into their bathrooms via the drain. The most practical and common method of achieving this is to fit a one way valve to your property’s outside drain that prevents these pests from even trying to enter your house via this route.