They're hideous !! You can't feel them crawling on you and what they do is: a whole slew of them will crawl up your shoe until they find bare skin, they one of them will give the order to bite. You'll have 20-30 or more biting you all at once !! Then you're furiously trying to wipe them all off. There's always a few that will get on your hand and bite you there. Then the burning and stinging increases. If you're allergic, like me, you swell up and after the swelling subsides you have hard white pustules imbedded under your skin that stay for months unless you dig them out. The Army should really study their tactics !!