Just experienced that with a Tuscany Cantaloupe. Took days to eradicate them all. Will keep this in mind.

Very creative.

I have a friend who has an electronic fly swatter. It looks like a small tennis racket. It takes batteries. You hold the button and wave it, and the bugs get incinerated. It's very satisfying.

Sounds like fun with those nasty little buggers.
I spent lots of good dollars on commercially made traps for house flies and they were about as effective as they were expensive.
Then I decided to experiment, I cut the neck and shoulder off of a 1 litre plastic Soda bottle, inverted it, put it back into the rest of the bottle, stapled it in place, punched two small holes just below the joint, added a piece of wire (you can use string also) to make a loop for hanging it up.
Then I thought about what might attract the flies best.
First I tried ready prepared dog food with added water, about 2 cups full, not all that successful over a 3 month period.
Next came raw meat, the HOT water, about 80-90 success rate, lots of those huge female flies drowned.
Then it hit me while I was cooking some cabbage on evening, cook cabbage and the flies come running like Bible-Bashers to Sunday Sermons.
So, in went some raw cabbage, the usual 2-3 cups of hot water and for 'dessert' (LOL) a small piece of raw beef sausage.
It's only the first month of Spring here at present but my home-made fly exterminator traps are working overtime eliminating EVERY female fly that comes along and finds the aroma of cabbage and rotting beef sausage irresistible.
I know it sounds cruel but I even derive a little pleasure as I sit and hear the buzzing of a fly as it vainly tries to find its way back out of the trap but eventually tires and falls into the mucky, smelly water below, to drown and join its friends and relatives as they become more and more Fly bait.

Have to try that

I'm going to try that!