here found this for ya: Controls
Hand picking: Easit way to controll them is to pick them up and knock them into a bucket of soapy. If you are scared about handling caterpillars, you can use some gloves or have someone else pick them up for you.
Chemical:
BTK in dust form can be used to kill caterpillars. BTK can also be used to foliar spray your plants. One tablespoon of neem oil added to your BT mix helps stick the mix to the plants better when you are foliar spraying.. BTK is available in liquid form. Apply BTK on all of the leaves both top and underside If you decided using the dust kind,spray your plants down with water before you apply the dust Apply every week to 2 weeks and or after it rains. The caterpillars must eat the BT as they are feeding on foliage in order for the caterpillars to be rid of.
Organic ways:
Insecticidal soaps, neem, oil, and spinosad are the safest insecticides that can be used to control.. Soaps and neem are non-toxic and are great to use when you have a lot of pets and want to be friendly to nature and its animals. Spinosad works very very good in controlling the caterpillar population and is non toxic to wild-life, pets, and humans. It hardly has any impact at all on the plants.
