I am using ladybirds as biocontrol. I have an aphid problem on my chillies, so at the moment I am fetching 3-4 nymphs inside every day and introducing them to the food supply. They are doing a good job, though getting to pupal stage quite fast, probably because of too much good food!!!
I think they're Harlequins as they're under my aphid-infested sycamore. If my hatchlings prove to be 7-spots then they'll go back outside so they can breed. The harlequins can stay on!
moonbells