Just a quick note to let you know we just tested your product Elephant Snot® on a sidewalk in Norwood,Ohio. This graffiti has had a number of tries at removal, with no success. We applied Snot as directed and power washed with water. All of the graffiti is gone. It's great! We will be using this product on other locations around the city. We are Citizens On Patrol Program (COPP) volunteers. Our graffiti removal team has removed 175 tags from the city in the last year. We are all volunteers and raise funds for chemicals by recycling aluminum soda cans and donations. While your product is a little pricey for us, it works and that's what we need after trying many other removal products that make claims but don't work.