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Posted: Mon Jun 23, 2014 5:11 pm
by YorkiePotters
Has anybody had any experience of using Patio black spot remover or Patio black spot preventer ? They have a website www.patioblackspotremoval.com . I was wondering if it was any good before purchasing it .
Posted: Mon Jun 23, 2014 8:45 pm
by r896neo
Hypochlorite will work. I and others have used it to remove black lichen spots.
There was a thread a while ago from roger the resident cleaning and sealing guru.
Here it is.
http://ext.pavingexpert.com/cgi-bin....02;st=0