While a rat flap might be easily installed its benefits to your drain system from rat incursions are enormous. Essentially it is a very reliable one-way flap which allows wastewater to flow out while preventing rats from getting in. The flap, which is manufactured from corrosion-resistant stainless steel, is simply inserted into the drainpipe and requires no specialist equipment or disruptive works to install.
It is estimated that over 90% of rat infestations in houses and buildings in Ireland are due to a defective drain pipe or systems. So in dealing with a rat infestation one of the first actions might be to install a flap and observe if it solves a problem. Thereby quickly solving the problem, which if initially misidentified may result in unnecessary delays and unnecessary pest control costs.