This is some amazing fence cleaner. It took off Penefin (Brazilian rosewood oil) and years of dirt with ease. We used a garden sprayer at 1/2 water to 1/2 solution followed by pressure washing. It says safe for pets. There is 7 2-1/2 gallon containers. I paid $15 per container.
The fence pictures show post cleaning and after the application of cedar colored sealer.