g'day liz,

they are there to eat the organic matter we get them but never noticed
any problems then we keep feeding our gardens organic matter on a
continuing basis.

snipped
With peace and brightest of blessings,

len & bev

--
"Be Content With What You Have And
May You Find Serenity and Tranquillity In
A World That You May Not Understand."

http://www.lensgarden.com.au/