How do you keep bees away from you while your mowing the lawn?

I dont know if it works for bees, but someone told me receintly to keep flies from entering your home, put a inflated paper bag with a twist tie on the top, on the top of your door frame, or whereever. It makes the flies think there is a wasps nest on your property. It may work for bees too, as bees and wasps are enemys. Its a old "Fish Restaurant Trick"