How long will Wet & Forget take to work?
It depends on the intensity of the contamination. If it is really light you will see results within days. Otherwise, it may take 2-3 months to see improvement. Your concrete may turn reddish brown when Wet & Forget is applied. This is normal and shows you have a good reaction. The discoloration will dissipate over a short period of time and is not permanent. The good news is when you use Wet & Forget the following season the cleanup will occur within weeks. In the very worst case scenario, where contamination is extreme, it may take 6-12 months to work.
