Caterpillars on my Kale and Cabbage

Sprayed em down with Spinosad this morning. Will this kill them and how
long should it take. Now its raining, about 6hrs after application.
Will I have to reapply?

I used a liquid sevens dust on mine a week or so ago. It cut the bugs way back. You will have to read the label on the product.to see.if you'll need to reapply due to rain. This cold coming in will burn them worse than bugs. I'll have mine covered, if I remember to.

Yeah, I saw that . Need to find that old tarp.

Just looked for em this morning, I cant find any of the lil green a##holes.
We shall see.

Maybe they're gone.

Y'all remember this. Use Dipel to kill cabbage loopers which is likely what you're dealing with. It's not a synthetic poison. It's Bt. Bacillus thurengensis or something close to that spelling. It's bad juju on caterpillars and is safe for you.