I would be grateful for any help as I have made a big mistake. I was treating my flowers with SlugClear, which contains metaldehyde. Without thinking I started to sprinkle it onto my herbs and strawberry plants.
I know the metaldehyde is poisonous, my query is do I have to dig up and throw away those plants or will they become "safe" again after a number of weeks?
This is the first year my herbs and strawberry plants have grown well, and being disabled, it will be very difficult and painful for me to start planting all over again, but I know I can't take any risk - I've seen what the stuff does to the slugs!