Bird BarrierDissolve-It Max Enzyme Cleaner - Bird Dropping Cleaner - Dissolves Waste – Treat Affected Areas Before Installing Bird Control Products - Bird Cage Cleaner - 1 Pint Makes 1/2 Gallon

This does a good job of loosening baked on gull poop. It slowly will loosen red spots, but would have to be applied several times to totally clean them.

I had hoped it would work a little more

I like it’s ease of use and I have noticed that the birds seem to stay for weeks at a time and there are no stains left behind. I am well pleased and have recommended it to my neighbors.

Don’t waste your money

does not work. use the daddy long legs product instead.

Based on the recommendation of a pest control specialist, we used this cleaner to clean the bird doo off the arms of our 20 ft. retractable awning, where a dozen or so sparrows were roosting and messing at night. We then applied the Bird Barrier gel cups to the roosting areas the recommended 6" apart. It was a lot of work, and some trial and error, but the little dickens finally gave up and went elsewhere. The gel cups alone do not work to discourage the birds from roosting. You need to get rid of the bird smell first, which you can't do with standard household cleaners. This stuff works when used as directed. Not an inexpensive venture, for sure, but worth it. We can enjoy our deck again.