Patio black spots, a type of lichen ... bleach which is really good at cleaning any paving." "I have used it past and present ...
Sam Williams, a DIY expert at SGS Engineering, has shared the "easiest" and most "effective" ways to clean paving slabs ...
Patio black spots are those pesky types ... Before you start cleaning the area, however, it’s important to prepare first. Remove any plant debris and excess dirt that might get in the way ...