This is the best domestic descaler on the market, no question! it has a 96% customer satisfaction rating.

Formic acid (instead of citric) based, so gives much better results.

Powerful enough to descale the mankiest of toilets, and works on all appliances that use hard water, kettles, steam irons, steam mops etc…

We’ve tried this on everything from toilet pans to bathroom taps, and descaled every appliance we have tested.

This is a powerful industrial strength product, use in a well ventilated space and wear gloves as it will burn if splashed on skin. always flush kitchen appliances thoroughly with clean water after and boil kettles a couple of times.

Use sparingly for steam irons and follow the instructions, always flush out your iron a few times after descaling.

Note about buying on the high street: Kilrock is no longer widely available in supermarkets and we have found some some ‘shops’ selling watered down versions which don’t work.

If you don’t want to use such a powerful product then we recommend using our EcoDescalk green descaler or a proprietary brand such as Oust general purpose descaler