Ants
This sign isn’t necessarily reproaching the person who left the doughnuts at the tech office but rather letting them know that if they wish to attract ants into the office, this is the right way to go. Obviously, this passive-aggressive message is meant to say, in a more polite way, “Don’t leave doughnuts in the office!”
After all, who would want to have ants around the office? This is a good message because it doesn’t just say, “Don’t leave doughnuts,” but it also mentions the consequences of doing so.