I stand by with tongs in hand, and have when needed stuck them in rodents mouths. My snakes have never been bit. Besides, I really doubt that the wild snakes in Africa have people thawing out frozen rats for them, yet they feed and survive. These animals know how to eat and what they are doing, you just need to trust them to do it.
Only rat I have had rejected by a qt animal was actually recent. My new albino was in shed and didn't eat. Rodent was killed and disposed of. I did not save or keep it, it went in the garbage.
I enjoy interacting with live rats more than dead ones. So I would rather maintain my feeders, see cute babies, and scratch their little heads, than thaw frozen dead ratcicles.
Again, this is me. If it doesn't work for you fine.
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