WalMart is out of the 30 gauge 8mm needles that I normally use, but they do have 31 gauge that are otherwise the same. Is this a concern? I've never used the 31 gauge before. I've already been to two different WalMarts.
I used the 31 gauge without problem. I thought the 8mm length worked better for Sootie than the 6mm...or maybe it was me sensing that I had better feel of it going in with the 8mm.