we have a few different types of ant over here, small red-headed ones, small black ones and some really annoying ones which are big, long-legged ones. the big ones seem to take extreme pleasure out of climbing up your leg/through your clothing and getting into the tightest spots they can find, like between your toes, back of your knee and then biting you. other times, they will walk up to you and bite the nearest thing they can... its like sometimes they want to see if you are food and other times they walk on you, get bored, then bite to see what happens. Silly things, ants. Thankfully though, they don't bite through hammocks and bags.