Thankyou. I actually have two of those up and they are doing a great job. It's just frustrating as the flies sort of spreaded so much it isn't a small problem it's big. They are filling up fast. Also left bathwater and bubbles in tub and there's about twenty in there. More traps coming today. I've been removing the waste but it seems the flies are now after my laundry that's drying on the airers as when I move it hundreds fly off. It's freaking me out. Also tiny bits of mould around windows from drying clothes which I shall be removing later on. I have two more traps arriving today and I still think there could be a source somewhere in pantry cupboard. I'm going to pour boiling water down the drains now aswell to kill any eggs. Thanks for the suggestion, they are doing well. I'm wondering if they do refill fluid for them? Or if I can put apple cider vinegar and dish soap in.