what do you use against worms

Hi gardeners. You used to be able to buy a powder to dust vegetables
with to keep worms from eatting them . I am planting radishes and was
wondering what you use now since I couldn't find anything on the shelf
to buy. The same dust can be used on broccolli etc.
Thanks

3rd try,it's been a bad day with the internet.We use a product called BTK,it's a biological insecticide,good control of cabbage worms and potato bugs.It comes as a liquid you mix with water safe for humans,we get it at Can.Tire

Hey,

You could try vermiculate(sp?) it's a puffed rock from my understanding.

Diatomaceous earth does the job.

I save and dry my egg shells, crush them fairly fine, but not powdered and sprinkle them in the row when you plant the seeds and sprinkle on top when you cover the seeds. They work very well and put minerals back in the soil.