Ladybirds sold online to tackle garden pests. bbcnews. April 06, 2014.With their brightly coloured shells, ladybirds are a distinctive insect in our gardens.But as well as being pretty, they are also a useful tool for the green fingered, a natural way to control pests that attack plants.Some companies offer ladybird larvae for sale online, as a greener alternative to pesticides.Mark Champion of the Lancashire Wildlife Trust explained to BBC Breakfast how to enlist their help