+1...if you want to get some from your backyard instead of buying them, then you'll want to breed them for a few of their generations before putting them in your enclosures.tho may i point out you do NOT wanna go out in ur back yard, grab some rolli polli and put them in ur T tank. usually you want to order captive bred isopods so that way u know they are safe to use. the ones in the yard could be full of nastiness like parasites, bacteria, pesticides, fertilizers and any other icky crap u find outside.