Wet and forget 5l makes up 30l of spray or 1l added to 5l of water where as the concentrated forms use 20ml per litre. Wet and forget, the super power one that you leave on, is worth a shot first. Only 15% of the price of wet and forget doesn't sound like way.
W & f is a different product that actually kills mould spores but takes a while to work. I'll continue to use wet and forget. I also used the version you.
Blind testing and review of outdoor cleaners was carried out. If you're looking for a good outdoor cleaner, you've probably heard of wet and forget. The visual improvement within 24 hours was also great. But with so many products on the market, it can be hard to know if it's really worth the hype.
Wet & forget at $3.30? 30 seconds spray and walk away is cheaper and has the same active biocide as wet and forget. Moulds, mildews, fungi and bacteria on any exterior surface. Spray away from the warehouse is a great price, user friendly and really works well.
When diluted with water and applied, it immediately. I used it on my guttering and it did ok, in that i can't see it any more. Pressure cleaning to remove black algae and moss will create damage by stripping away the cement and sand surface layer,. The other 30 seconds outdoor surface cleaner is bleach.
It costs around au$115 for 5l including freight to australia (took less than a week) and. It may be used to clean any outdoor surface.