The plastic box contained lots of shredded paper with tiny black specs and only 2 or 3 tiny larvae crawling about. Not sure what the black specs were but they didn't appear to be moving and were much smaller than the aphids these weren't mentioned in the description. I tipped everything into the little bags and placed them on the leaves on the infested plant in my conservatory as it said to use under glass at that time of year. I checked everyday but never saw any larvae on the plant just multiplying aphids and I've seen no ladybirds even though I thought I'd seen 2 pupae. Disappointed! It would have been much cheaper to buy bug killer