I use the same brand o f/t and ive never had a problem. As for storing. Just treat them like fresh beef. Frozen last for a long time. So feel free to stock up for a few months. Yeah the size thing is inconsistant but just buy a size up if thats a consistant problem. Also there are site you can buy bulk rats/mice frozen and shipped pretty cheap. And they give you length and weight in grams of their rodents. No wirries either if a bp dont eat it off the bat. You can refreeze. But keep in mind refeezing causes a breakdown in the rodents tissue and is less nutritious after first rethaw. Saying that, dont refreeze more than once and u should be fine.
Good luck.
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