All your question are answered in the link below. Do note: Preventative V's curative names and time frames. Here is a link that might be useful: Home Lawn Grub Control Products

I'd go with pyrethrin, because it is natural, and completely safe to use on veggies. The biggest issue one might encounter with pyrethrin is allergies and/or athsma. I have read that sticky traps work too. Diatomaceous earth powder is another thing that will work. Dust it on and around the plants. Personally, I don't have any ideals that go against using pesticides, although I like to try not to use anything harsh. But, I also don't bother trying to screw around with less effective "safer" measures either, because I find that they just aren't as effective, and they take a lot of persistance. I prefer to just deal with the problem immediately, and not have my food crops suffer. So, if it was me with an infestation, I would douse them with something sooner then later. Joe

Decisions, Decisions!!! I guess I would place the value on the fruit the plant will provide and not the initial cost. Insecticides may not meet your requirements of cost. And the effects of pesticides on humans vary from major to nil. Search at the SITE level for homemade pesticides. Otherwise, you'll have to get some gloves and start picking them off the plants.

The active ingredients in the herbicide are the same as those used for JB attractants.