Yeah I should have but forgot. When they get this big they are not that effected by the Bt. It works great and non toxic. Catapillars ingest and it shuts down their digestive tract. They starve to death not poisoned. You really got to get them when they are small. I usually do not have a problem with the cat. on blueberries, apples yes, but this year is a very heavy infestation. When they are done with oaks they look for other things to eat. I have even seen them eat pine trees 20 years ago. Looks like a forest fire went thru the area. I should have looked earlier. Stupid. P.
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