By Candrews
United Kingdom 
what do you do about new zealand falt worm in a garden that is full of heavy clay soil and is either waterlogged
or hard as rock.
11 Mar, 2011
Answers
Hi Candrews and welcome to GoY copy and paste this url into your web browser for the DEFRA info
http://flatworm.csl.gov.uk/
11 Mar, 2011
Sprinkle them with salt is what I am told will kill them.
However, I believe that current thinking is that they are no actually harmful. It used to be said that they destroyed the earthworm population but I think that has now been dis-proved.
11 Mar, 2011