How to change a mushroom urinal cartridge

If your waterless urinal is starting to smell, draining slowly, or water is pooling in the bowl, it may be time to replace the active trap insert (black mushroom filter with blue centre).

A key sign that the cartridge needs replacing is when the active trap insert is no longer blue in colour. Over time, the filter becomes less effective, which can lead to odours, poor drainage, and blockages.

Please note: Only take action if it is safe to do so.