i dunno about neem oil. you should replace the top inch or two of soil from the pots, its got the eggs in. i used nicotine solution made from soaking some nicorette inhalator cartridges in a pint of warm soapy water - i used 6 which was about 60mg - thats about a pack of cigarettes. i then sprayed every three/four days for a couple of weeks. the idea is to stop em breeding cos they don't live long and its the young uns that do most damage to the plant.
emmpey Reviewed by emmpey on . yellow wormy things won't go away! Ok so here's the deal- Harris7 and I have got these teeny yellow wormy things on our plants. They won't go away. They are so small you can barely see them, but they are eating our plants badly. We use insecticidal soap on all the plants whenever we spot one, and then we spray all the plants with a diluted neem oil mix every few days. I sprayed a bug with the soap once, waited an hour- and the wormy thing was still there, looking pretty dead to me (wasn't moving). It seems to me that the Rating: 5