Sacha wrote:
I find that they don't work. I used to use them very sparingly,
without much success, so I tried one test of putting almost a
layer of them around some plants, and it had no more effect.
So I shan't ever buy them again.

We had reasonable success with nemaslugs, but I think their
effectiveness has pretty
much died off now, as we haven't bothered for a year or more.

You have to treat every year! It works.

Technically, I think you're meant to treat every 2 or 3 times a year. It
worked well whilst we did it, and it carried on working well for a while,
then we got bored and stopped doing it. Bored/disorganised/etc