Just had another idea. There is a product called Tanglefoot which you can
spread
around the trunks in a band. The caterpillars who try and climb up the tree to
lay their eggs will get stuck in it. If you have young or thin bark trees, you
might want to
apply the tanglefoot to a closely wrapped band. Won't help you this year, but
possibly the next. This method also works for other critters that climb up your
trees to lay eggs like codling moth, procession caterpillars, and ants. .
Controlling ants reduces scale, aphids and mealy bug problems, as the ants
protect these pests.

Sherwin D.

wrote:

I've had an orchard for four years. This year, the tent caterpillars
have decided they are taking over. Can you tell me, besides using BT,
what are some other ways to get rid of these pests? Should I have
sprayed with BT earlier, like before they went into pink bud, or can I
spray now that they are blooming? What would make them come in this
year instead of last or the previous years?