Dr Waris was good enough to show me his work. He has done several excellent things, not the least of which is to get his homeopathic preparations accepted by the authorities in Pakistan as bona fide agricultural inputs.
Just as important for this whole work is that he has had several of his preparations independently tested for efficacy - more disinterested testimony - and the results are truly startling. The results are statistically significant to a high level, way way above control for mortality of pests, and roughly the same as the chemicals which kill bees etc and are used throughout Pakistan for cotton and wheat. (Dr Waris began this line of enquiry because so many of his patients were directly or indirectly the casualties of agricultural chemicals.)
So I refer you to a few of his preparations and if you are cotton or grain growers perhaps you would be good enough to further this work by trying some of them on your crops.
Ventage for cotton mealy bug ,Black warrant against Aphid, White Fly, and Jassid - and Rigorous against wheat aphid.
H/Dr Iftikhar Waris
Two relevant articles - one recent and one from 2002.
You can see some images of our meeting at Dr Waris' web site. Of course, I mention this mainly so you can read about his description of us both.