(hoping this works for me) This totally works! Done it twice now and it works perfectly. Also read somewhere gnats are attracted to the color yellow so I added a little yellow food coloring the second time. Got more gnats with the yellow!
Put two caps full of vanilla extract in a coffee cup, then place it in the oven at 300 degrees for one hour. Within twenty minutes the whole house smells like Heaven. Its actually a common realtor trick.
LISTERINE!! any color/flavor. Pour it in, full strength in good sturdy spray bottle. Spray around your tent site & picnic table or patio & lawn chairs. (I mean saturate the ground and you can spray a little on things that you don't mind getting the mist in). You will be amazed! No Mosquitoes, no no-see-ems/gnats. You will have to repeat after rain or if animals stir up the dirt a lot. This is safe for kids, dogs and it doesn't have the stickiness or chemical smell. Try it! by marissa