"Jangchub" wrote in message
...

Bacillus thurgiensis applied to the tree in spring when the worms are
out. They do not kill the tree. When they leave worm stage into
their cocoon new leaves grow. It's not quite serious, it's nature.

Jangchub,

That is exactly wrong.

The gypsy moth is an imported pest with no natural enemies to keep it in
check here. Larvae have been known to kill trees through defoliation.

While your advice for using BT is accurate as it goes, the OP needs to
elicit professional help. In fact, if he *knows* that he has an infestation
of gypsy moths and does not report it to State and/or Federal authorities,
he may be in violation of Federal law and subject to arrest and prosecution.
--
Mike Harris
Austin, TX