RodentPro is both good and bad. Pricing they’re pretty hard to beat, but many people have had issues with their feeders (myself included) ranging from poor sizing to feeders causing deaths. Honestly many people still use them, including zoos and wildlife rehab facilities, so they’re not “bad” per se. Any company operating at that volume will have QC issues.
That’d be this thread, myself and @ballornothing looked into the origins of frozen feeders:
Essentially several of the big names, specifically RodentPro, Big Cheese, Layne Labs, and ARS have bulk bought rodents from the same handful of overseas companies. These mice are either prepackaged or repackaged and then distributed to customers. While I don’t know what the other companies’ packaging looks like, if you look at RodentPro bags they now specify that it is a distributed product:
