I have the applicator like Optimum sells and it works great. The foam is not as fragile as one I had previously used (softer foam) that would tear if it snags something.
Can Power Clean be used on tires at full strength? Any precautions? At 1:3 it seems to have a imiliar cleaning ability as Meg's APC 1:4 but I need to get some brown of tires but it is not coming off with PC and a stiff brush. I am not letting it soak more than 30 secs.