OMG so I have tried everything to keep flies away, it wasn't until I joined a chicken keeping facebook page that they recommend a red top fly catcher, I thought well might aswell try it, and wow!! I have never known a product work so well!!
its a bag, with a net funnel, the flies go into the funnel and then the bag and cannot get back out again! it does use chemicals, and its a tad pongy! hence you keep it 5m away from 'human' areas, but wow its seriously works, I have 3 of them up in my garden now and the difference it unbelievable! no flies in the house and there not really noticeable outside either!
its a bag, with a net funnel, the flies go into the funnel and then the bag and cannot get back out again! it does use chemicals, and its a tad pongy! hence you keep it 5m away from 'human' areas, but wow its seriously works, I have 3 of them up in my garden now and the difference it unbelievable! no flies in the house and there not really noticeable outside either!