This has been discussed a lot. Searching the google archives will produce
lots of opinions.
http://groups.google.com/

Bob

"Andy N" wrote in message
news:gki_9.93150$rM2.45429@rwcrnsc53...
I am making a new garden and was planning to put treated 4X4 lumber around
the perimeter. Someone mentioned not to use it because the chemical will
leach into the soil and contaminate the vegetables which may cause cancer.
I
would appreciate your opinions on this matter. Thanks