dang, i might need to get one of those bug-a-salt deals.
I've been grilling and smoking for around four years now (well, grilling for a lot longer than that), and I never had a problem until this year. Boy did I have a problem. It was a mother frikken fly onslaught.
I tried the water in sammy bags, but that didn't to squat. I didn't know I was supposed to add a penny though. My setup would allow sun directly so might now work for me.
I bought a [ame="http://www.amazon.com/Rescue-FTR-DT12-Reusable-Fly-Trap/dp/B00004TBKG/ref=sr_1_1?ie=UTF8&qid=1443566897&sr=8-1&keywords=rescue+reusable+fly+trap"]Amazon.com : Rescue FTR-DT12 Reusable Fly Trap : Insect Traps : Patio, Lawn & Garden@@AMEPARAM@@http://ecx.images-amazon.com/images/I/41v9OyJAbuL.@@AMEPARAM@@41v9OyJAbuL[/ame] and it worked well BUT, you can't just add the bait and expect it to start working. It requires some "stewing" time and good strong sun seems to help that along. After that it was the source of many a fly's death this summer. HOWEVER it stinks to high hell... rancid rotting meat pretty much sums it up.
I hung the classic [ame="http://www.amazon.com/Paper-Strips-Catcher-Trap-Victor/dp/B0043GD78O/ref=sr_1_5?ie=UTF8&qid=1443567111&sr=8-5&keywords=fly+strip"]Amazon.com : Fly Paper Strips, Fly Catcher Trap, Victor Fly Bait 4 Pack : Insect Traps : Patio, Lawn & Garden@@AMEPARAM@@http://ecx.images-amazon.com/images/I/41UHmndkiNL.@@AMEPARAM@@41UHmndkiNL[/ame]. They are ugly, but pretty effective. They don't stink. They are cheap. I now have a stash of these in one of my outside drawers.
I'm thinking about getting one of the [ame="http://www.amazon.com/Flowtron-BK-15D-Electronic-Insect-Coverage/dp/B00004R9VZ/ref=sr_1_4?ie=UTF8&qid=1443567303&sr=8-4&keywords=fly+zapper"]Amazon.com : Flowtron BK-15D Electronic Insect Killer, 1/2 Acre Coverage : Home Insect Zappers : Patio, Lawn & Garden@@AMEPARAM@@http://ecx.images-amazon.com/images/I/512ygbPILkL.@@AMEPARAM@@512ygbPILkL[/ame] deals and putting on the other side of the porch where I have everything. I really hate flies and I can't handle another season like this one.