RNase without RNase

[Jim Kami]

Hi,
    We've had a problem in our lab recently with our genomic DNA
isolations. Turns out, the cause is the RNase A we've been using.
Changing suppliers and prep. procedures hasn't helped.  I was wondering
if anyone knows of a way to eliminate RNA from genomic DNA preps without
using RNase ?

Thanks in advance.

Jim Kami
Dept. of Agronomy
University of California @ Davis
Davis, CA   95616