I got this email awhile back and I tried it in my yard where I was working and it helped. good luck
Mosquito Spray...Worth a try
I was at a deck party awhile back, and the bugs were having a ball biting everyone. A man at the party sprayed the lawn and deck floor with Listerine, and the little demons disappeared. The next year I filled a 4-ounce spray bottle and used it around my seat whenever I saw mosquitoes. And voila! That worked as wel l. It worked at a picnic where we sprayed the area around the food table, the children's swing area, and the standing water nearby. During the summer, I don't leave home without it.....Pass it on.
OUR FRIEND'S COMMENTS: I tried this on my deck and around all of my doors. It works - in fact, it killed them instantly. I bought my bottle from Target and it cost me $1.89. It really doesn't take much, and it is a big bottle, too; so it is not as expensive to use as the can of Bug-spray you buy that doesn't last 30 minutes. So, try this, please. It will last a couple of days. Don't spray directly on a wood door (like your front door), but spray around the frame. Spray around the window frames, and even inside the dog house.