On Thu, 01 Dec 2011 16:01:15 +1100, F Murtz wrote:

Best toxic substance is confidor. They fall dead out of the tree rather
quickly. so do a pile of other beneficial insects for years afterwards.

What about the bees that pollinate the lemons if that is what they do?

Kills them stone dead.

Some uneducated arsehole must have found the local bee hives near my place and nuked them
because there are very few bees (both honey bees and native bees) about this year (Hills
district in Sydney). Hence the yield of fruit and veges that I grow is way down on last
year. :-(