When changing a millipede substrate, how do you ensure that the old substrate is completely free of millipedes (including babies)? I live in northern California but all 3 species I'm looking at (N. americanus, N. gordanus, and Chicobolus spinigerus) are local to the southeastern U.S. I'd hate to accidentally introduce a non-native species when dumping out soil.
Thanks in advance!
Thanks in advance!