This may sound a little crazy and I am sure many of you have heard it before, but here goes. Put non-sudsy ammonia on a cotton ball and apply it to mosquito bites and bee stings. The ammonia somehow neutralizes the venom and poof! No more itchy bites. It only takes a little bit on a cotton ball or swab, don't douse it with the whole container.
Orajel For Bee Stings