"Dave Hill" wrote
I don't know what all the fuss is about, you can use the soil for a
year or two without having to change it, then you can decide about
paving .

My thoughts too. It will take a few years for any nasty things to become
established in that soil and even then it could be replaced from elsewhere
in the garden or sterilised. A neighbour has been using the same soil for
years with no noticeable problems with his Toms, just adds compost yearly.
--
Regards. Bob Hobden.
Posted to this Newsgroup from the W of London, UK