I got really tired of small flies wanting to make there home in my beer faucets so I came up with this simple idea. I took some 1/2 inch copper caps that I had and drilled a small hole in the end. Then I put a small stainless cotter pin onto an elastic. Then I put the end of the cotter pin into the cap and pressed them flat. Just put the elastic over the handle of the faucet and the caps slide onto the faucet. Keeps the bugs out and is quick, simple and cheap. All of the items used I had in the garage but I would guess the cost would be less than $2 if you had to go buy everything. And It only took me about 10 minutes to outfit all four of my faucets. Now I'll see if I can attach a pic. If not, it is in my gallery.