[This review was collected as part of a promotion.] I am so glad that Bio Advanced 2 in 1 moss and algae killer cleaner has come into my life. We have white siding on our home every year that and our porches become green, nasty, and dirty looking from the moss, algae and dirty slimy stuff. We tried everything but nothing would really work to eliminate the issues. Until now! We have the whitest siding, our porches aren't slimy dirty skating rinks and it stays that way for almost a year. Allowing myself, husband and family to do other things together, then having to scrub everything down several times a year. Its fast acting as soon as you spray it in you within seconds start seeing it go to work. I definitely recommend this to anyone who wants a product they can definitely use and depend on. The price is reasonable, but if doing large projects like we do you will have to buy several bottles. But for simple little items to eliminate moss and algae like a deck or patio this is perfect. There isnt a strong order as well.

I applied this to my roof in October -- it was cool, but not cold. I used a whole bottle on less than half of the roof to be sure it was concentrated enough. Not only did the moss not brown and die, it seemed to actually get greener and stronger. Try a different product.

[This review was collected as part of a promotion.] Wow, this product really works! My mobile home had some green yuck stuff like n it. I sprayed this on and it looks awesome now! Just hook up to you water hose and spray! My siding is so nice and clean. This stuff works really well and I have bought some since receiving this sample. If you are looking for something to remove all the yuck, here it is!

I used it on shed shingles,only worked on 1/2 of it,on black top ,nothing,tried 2nd bottle,still nothing moss is as green as ever