Interesting problem. Worms. Years ago I had an onslaught of worms killing some of my tomato plants. Everybody thought I was crazy, had lost my mind. Which had me a little bit worried until I found one person online that had the same problem, then I found another. I was so relieved!
I'm told there were no worms in North America until the settlers brought them over from Europe. Interesting if true. Not native here.
Anyway, you didn't say if you were organic or not. I had an awful problem with pill bugs (wood lice) for years. The only organic thing that I found that would 'kill' them was pyrethrins. Other products like Spinosad just repelled them for a few days. Apparently pyrethrins will kill a great many bugs, both good ones and bad so you have to use it carefully around bees and beneficials. Anyway, they are super expensive and I couldn't afford to keep using them so I bought the synthetic permethrins. It says it kills around 100 different kinds of bugs and creatures. I can believe that. I don't have to spray it on the plants at all. I just spray it very lightly on the soil around the stem of the plants. It kills the pill bugs immediately and continues to work for about a month. This is the product I buy at my local hardware store.
https://bonide.com/product/eig...
You could try it. It might work well in your situation. Lots of luck and happy gardening.
