Shoot, I'll take them coupons. Free food. I've eaten worse in some third world countries.To answer your question though my bro worked at mcd's and they washed the lettuce when they take it out the bag. You just got unlucky and got a bug, get over it, go to another mcd's and use them coupons. Or like I said give them to me. It could happen anywhere insects are to include your house, you not going to eat anywhere anymore, get over it and move on....