CABBAGE COLLARS Please can you tell me if you use these collars and what could have use as an alternative to the shop bought type?

Yes. You can cut circles of carpet or vinyl - anything to make a barrier that the fly can't get past.

Don't use them at all... But not in an area with a serious problem.

Sure, but the fly has to put its egg laying end where it wants the eggs to go! Anyway, it does work, and you don't need to throw money at it.

Thank you for answering. Sorry about the delay in replying.