HELP ME!!!  
I think b/c of all of the rain we have had, there are an abundance of flies (and mosquitoes) this year!  We keep the 'regular' trash can in the garage, and it gets emptied often, and yet it attracts flies like crazy. 

Anytime someone comes in or out of the garage into the house, a fly (or two!) sneaks in.  Is there anything I can spray on the can to discourage them?  They are making me nuts.

Thanks!!