bacillus thuringiensis shelf life

[Semjase]

> For example, two weeks ago I drenched my milkweed
>plants with Ortho Malathion insecticide to kill a good percentage of the
>ants, earwigs, spiders and other predators of monarch butterfly eggs and
>caterpillars.  Then, just two days after spraying, I set a cage over the
>plants and introduced several female monarchs inside the cage to have
>them lay several hundred eggs.  Now, about ten days later, I have
>several hundred almost full grown healthy monarch caterpillars.
>
>Paul Cherubini
>
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Paul:

You are correct in this, I have seen the same phenomena.

S.