Metex - Ratwall For 110mm/4" Pipe. Made From Robust, Corrosion Resistant Stainless Steel With A One Way Valve & Flap. This Rat Blocker For Drains Is Easy To Install By Hand Or At Street Level

Positives; it’s well made, hinge design is good in that it is largely external to the pipe when fitted so doesn’t reduce its bore, and the nut tightening mechanism to fit it works well. Sizeable metal ‘stop’ prevents loss down the sewer if it comes loose.Negative; CHECK YOUR INSPECTION CHAMBER before ordering- I discovered that the inflows and outflow pipes all had significant overhangs of the brick walls above them ,which meant I couldn’t use the fitting rod from the surface to place the rat wall. Fortunately a bucket of caustic soda/water mix poured over the inside of the chamber carefully and then a rinse off with a hose made getting down there to place the rat wall and manually adjust the nut a lot less unpleasant!

Easy to fit and effective

We had rats that had burrowed into the side of our sewer drain and had got under the driveway, they had filled the drain ways with type1 gravel that they had kicked back from the driveway and blocked it all up, even after clearing it they where visiting daily and destroying the foundations of the driveway.The Ratwall was straight forward to fit with a 17mm Spanner. We have checked daily for a week and its clean as a whistle!It expensive for what it is, I thought the box was empty when it arrived its so light.. but then if it works and given the cost of pest control firms its well worth it!

Working well no more rats up the pipes did have to reverse the gate but not a problem

The device is overpriced and does not work properly when reversing the flap for an outlet.Firstly, I wanted to fit to the sewer inlet pipe, however because the sewer half pipe wasn't perfectly aligned with the inlet pipe, it would not slide in no matter how hard I tried. So I had to reverse the flap and fit to the offending outlet pipe. But when tested the flap kept getting stuck open. On further investigation, I noticed that there were sharp points around the flap that were catching on the housing. I had to dismantle the device, file off the sharp points and reassemble, and then it worked fine. Unfortunately I had to buy and modify a second device as we have two outlets from the house. Over £200 spent so hopefully this will stop any rats getting up the soil stack and eating through the toilet connector pipe.Edit: 2/12/19 Just added a photo showing what a rat did to the toilet flexi connector in our ensuite, and why I had to do whatever it takes to stop it happening again!

Works well when the channel is straight and there is no concrete overspill into the channel. Anything other than a "perfect" channel and it just won't fit.

This does seem to work -But 2 Cons - I feel that it is REALLY expensive! - but then if it does it’s job and keeps rats out of your house then OK it is worth it? - I did a lot of research before buying this and it does seem to do its job? - Lets hope so! - I will send an update maybe? - I have actually bought 2 of these - the second one didn’t seem to fit as tightly as the first I bought. The first one I bought, I had to file the flap on one side as when it lifted to allow liquid/waste to flow through it was sticking in the open position. Not what you expect for such an expensive bit of kit.

This is a no nonsense product. It uses good materials where required, and has a simple effective design without any silly design mistakes. It installs simply and is extremely firm once installed.If you are having problems with rats in the UK, it is highly probable that they are Norway rats, and these almost always come from the drains, not complicated wall climbing or invasion through exterior holes. This simply isn't how the Norway rats operate. I wasted so much time and effort looking elsewhere when I should have been looking at the drains.This has been 100% effective.

hatte immer wieder ratten in unserem kanal/revisions-schacht ,anfangs rattengift benutzt,was auch nützte,jedoch nach ein paar monaten wieder neue ratten aus dem strassenkanal "zugelaufen...." ,habe dann die rattenklappe gekauf und eingebaut(rohrablauf richtung strassenkanal,glasiertes tonrohr DN150/150mm),anfangs dachte ich das sich die ratten an den seiten doch irgendwie "durchmogeln" könnten,aber seit dem einbau keine ratten mehr im schacht,der einbau selbst ging ganz einfach innerhalb weniger minuten.......

Es wurde auch beim zweiten Versuch nicht die 150 Variante, sondern die Kleinere zugeschickt. Das ist sehr schade, denn es ist der beste Rattenblocker, den ich in der Hand hatte