With a life span of about a month a female house fly is capable of laying up to 150 eggs in a batch. Over a period of a few days, she will produce five or six batches of eggs. If you use a fly trap, such as suggested, I would stay away from the fly traps bags that Lowes or Home depot sells. Oh yeah they are effective, but you may never get the stench out of the camper afterwards. Good luck!
Neat bar trick:
- While at a bar, bet the guy/s next to you, who may have had a few drinks already, that you can drown a fly and then bring it back to life. (Of course flies in a bar doesn't say much about the hygiene of the establishment)
- Next catch a fly (then that depends on your skills and how many beverages you've consumed)
- Ask the bar tender for a glass of water then place the fly in the water. (you can also use your beer, but I'd rather use the water)
- Wait for the fly to stop moving, apparently deceased then remove it from the water, place it on the bar, noting it isn't moving.
- Ask the bar tender for a bit of table salt and pour it over the fly to cover it. Wait for it...
- When the fly comes back to life, collect your bounty and run.
My Navy brother taught me that and though I was Air Force it worked well on my fellow airman. Then again it also tells you the hygiene and class of bars I attended.