"David Hill" wrote in message
...
"........I have two young children so I'm concerned that perhaps they
could
be poisonous(?). How do I get rid of them permanently ....."

Feed them the mushrooms?

If they are mushrooms then be grateful for them.
Try asking at alt.nature mushrooms (News group)

--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk

go to your garden centre and get some fungicide this will get rid of the
majority