Hi everyone, we have had an influx of wasps and flys this year, so I brought a wasp trap(betterware) and it worked, you put orange juice in it and they go through middle and dont(generally) come out again. But I have used in my, orchard,loft(Wasps up there) decking area and just about anywhere there is a problem, plastic(Deep, I use the ones my dogs treats come in, as they have hanging handles) put orange juice in and it works the same, economical and recycles the plastic, use deep treat containers also for the slugs but with cider or beer in it. hope this is helpfull. Regards Pat.w.