Complete chilli novice

I've bought adult ladybirds and larvae before. The adults tend to fly away and disappear to who knows where. The larvae are much more effective but they are tiny when you buy them and it's a bit tricky coaxing them on to a leaf. My best tip for getting larvae in your greenhouse is to grow lots of flowers which attract the adults, they seem to pay a visit to my peppers and lay their eggs every year now.