I put the rodent to defreeze only 30-60 minutes before feeding. I feed as late as possible.

I feed in the enclosure. Once they are thawed, I put them in ziplock bags and in hot warm water (no boil just hot water from the tap). My bigger snake doesn't refuse it. If they do, I leave them in the container and they are usually gone when I wake up. If it happens they are not, I put that rat under a lamp for a few minutes and offer it to another one. If not taken, it's trashed.

For the smaller one, I kinda do the same. But if they don't tag it when I present them, I put them under a lamp for a few minutes or even seconds (really close), mostly on the head and present it back right away to the snake. It will usually tag it, just giggle a little bit etc... If after a little while he doesn't go for it, I leave it in the container. If not eated the next morning, I reheat it under the lamp and offer it to another one. Just like I do with adults.

Hope this help !