Works but have patience
I think Poorboy's has discontinued this formula. It works well, although not perfectly. I had a lot of bird crap on my car last summer... this got off about 60-70% - better than anything else I've used. The remainder was from really large droppings and/or was heavily baked on and frankly it probably would have come off with this product if I had the patience to rehydrate the droppings using the spray-and-cover method. I recommend getting a LOT of this product if you keep your car outside where it can be an easy target for birds. Worked well on glass, paint, and trim.
Rating: 4 stars