I occasionally watch a twitch streamer that feeds stray cats in Florida. The only "damage" that I can see would be staining of concrete by food dropped on there

I occasionally watch a twitch streamer that feeds stray cats in Florida. The only "damage" that I can see would be staining of concrete by food dropped on there. You can see where some dropped food from other people has marked the pavement in places. Would staining be classed as damage? This particular streamer puts his food into trays and waits for the cats to eat and then removes the tray. No idea what happened here, but that's the only thing I can think of.