Phoenix Gum Removal_Typical Pressure washing results

Here is a perfect example that you would typically see after a pressure washer has been asked to remove gum from sidewalks or entryways.

The edges remain because they are hard and the middle has been eaten away. Where did it go? It most likely ended up in the parking lot, which means it can still find it's way back onto the sidewalk via a customers shoe.

You will also notice that permanent damage has been done to the concrete by high pressure held inches from the surface.