Bird barrier dirty bird multi-surface bird waste & stain remover, gallon bottle – cl-7000 use dirty bird on any washable surface exposed to bird droppings, like roofs, gutters, ledges, awnings, chairs etc. It has been adapted to quickly break down and provide rapid organic waste removal including bird droppings. Dirty bird can be used at 100% and is applied directly to the waste accumulation. Dilution ratio: 1:4. 1 gallon makes 5 gallons.