Ever used them, and if so what success did you have? I'm considering them for Leaf Notcher weevils. See my What's this bug? post below.
Do you mean the Sri Lanka weevil?
You can try carbaryl, acephate or an
insecticide that contains a pyrethroid labeled
for leaf-feeding insects
This is just one of many links on solutionsforyourlife.com
Here is a link that might be useful: A NEW LEAF-NOTCHER IN THE NEIGHBORHOOD
Thanks for the article. I was thinking until I controlled the larvae underground with nematodes I was fighting a losing battle. Maybe not, looks like they may not damage the roots.