Wet and Forget has a very gentle cleaning action, using just the wind and the rain to lift away the contamination. Because Wet and Forget only has a PH level of 8 (UK tap water is kept between PH 6.5 to 9.5) it is used to clean historic buildings and monuments. This is why organisations such as Historic Scotland use our product to clean their historic monuments with some dating back thousands of years.
The Welsh Government also use Wet and Forget to clean their cathedrals and castles. Caernarfon Castle above being the latest to use our product.