April 23, 2008
What is the best way to stop gypsy moth/caterpillars?
What is the best way to stop gypsy moth/caterpillars?
Veronica
Expert
The most environmentally responsible way to treat gypsy moth is to use a bacteria called BT or "bacillus thuringiensis". It is a biological/organic control that is harmless to humans. It's available at better-stocked garden centers under the names Dipel , Thuricide , and Caterpillar Attack.
Be sure that the label says "Bacillus thuringiensis var. kurstaki". Other varieties (israelensis, San Diego or Tenebrionis) are ineffective against gypsy moths.A tip: If the caterpillars are too big, controls won't work. Use controls only on caterpillars under 5/8-inch long. Be aware that BT also kills the caterpillars that turn into butterflies.Join this conversation.
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