Really simple but great device to stop the smells from our very old drains.
Works a treat and easy to install once we cut it down to fit the 80mm drain.
Bathroom now has pleasant smell rather than smelly drain smell coming from the shower.

Absolutely fantastic product and the smell is GONE! Easy as to install, I’d recommend this to anyone who has a smelly drain.

Good simple design, easy to install. Stops air flow coming up out of floor drains ie smells , and other uninvited visitors.

Our drain only ever emitted an odour when you turned the shower on. Not anymore!!! No smells, and you wouldn’t even know the grate seal was in there. It drains full shower flow uninhibited. Overall a pretty good product👍🏻. Would I recommend it? Yep.

Does an excellent job! Came quickly and was eaay to install.

Easy to install and it stops the smells.
I wish there was a smaller one for my open shower hole! It's only 65mm.

The Grateseal stopped the drain smell and stopped the drain gurgle sound of other solutions.

Bought 2 of these after trying to get rid of the smell coming from the bathroom drains. There are no vent pipes, so the drains were the vent.

Thought that some drain cleaner would work, but our pipes were clean. A mate suggested these, so I gave them a try.

Once fitted up as per instructions, no more smell! In both bathrooms. We are very happy with this product. Thanks!

Easy installation and it does its work properly.

Simple concept and simple to install.
Installed two of these at home over the weekend. Unfortunately neither of the drains I was installing into were standard. One had been reduced by whoever installed it with mortar, so I had to get creative with the seal. The other drain had a 35mm pipe (weird) and I had a 50mm Seal unit. Again I got creative and used a coke plastic bottle lid, cut off to screw the oversized seal into place and create a fairly air tight seal, whilst still allowing the diaphragm to open and close.

Fixed the sewer odour immediately, great product.

Great product

Resolved bathroom smells and fitted both the shower and floor drain perfectly.

So easy to install, and I'm not handy at all! Took less than 5 mins.
Completely effective, bad smells are massively reduced and no more drain flies!
Shower is draining perfectly, no issues since installing.
Brilliant invention!

I can’t believe how far across the globe i had to look find something so essential