Rats & Mice Prevention for Drains, Stainless Steel Drain Rat Flap, Non-Return Valve, Rat Blocker for Sewers, fits drains (95-110mm, 4 inch)

It was bargain price for one of these and was a slack fit but I bolted a u shaped strip of metal to the top bolt and that made it a tight fit. It's a few weeks now and no rats have managed to eat my toilet waste anymore.

This product was really easy to fit. Looks excellent quality and will hopefully work now we think the rats were getting in through that pipe so can only come down from the loft and not up it but think they are now gone. Such a good invention. Would highly recommend. Will hopefully last years.

Told to install one by an exterminator at £350 +Vat. Under £50 to buy and install. Rats seem to have gone. They can exit but not return through the sewer pipe.

Did not fit

Seem to be expensive for what they are But these were the Lowest price of this design. Too early to comment on success of device. Very easy to Fit. Says Stainless Steel ( I worked in Steel Industry ) so If true , they should last along time.

I got one of these, tapped it into the pipe gently with a hammer. Rats gone. Job done

Ordered on behalf of the experts that were dealing with the pest control issue. Easy to fit and I’m assured does the job perfectly

Found difficult to expand or contract due to the sturdy designso did take a bit of work to get installed but overall did the job that was required