I'm trying very hard to garden organically, but my entire garden is infested with aphids and ants. The infestation is so bad on the trees that the leaves are curling and basically destroyed. Has anyone tried buying either live ladybirds or ladybird larvae to combat this and does it work? I read lots of places that it does but conversely also that the ants will fight off the ladybirds in order to protect their aphid farms (yuck) so that there's no point. Worth a punt or shall I just save my money?