Check out Relfe.com to see some photographs of what the ants did when they encountered an aspartame and honey mixture.
I had heard of a woman who made up ant poison from aspartame, and since we in Florida were being invaded by ants, I decided to make up some ant poison of my own. I decided the best way to get them to eat it was by mixing it with raw honey. I mixed roughly 3 or 4 parts raw honey to 1 part aspartame and put it out in a toy baby saucer for them.
Sure enough, pretty soon, the saucer was FULL of dead ants.
Later on, I put a small amount straight onto the floor. But this time, I got quite a shock when later on I glanced at the mixture. The ants had done something VERY strange to it!
You will see in the above picture that the ants COVERED UP the aspartame mixture! Presumably as a warning to other ants - "Stay away from this! It kills you!"