The story I know, probably missing stuff and not 100% accurate..
Critterlove owner, brewer?, originally invented HPW from Wombaroo high protein
powder from Australia. But many others made copies of HPW for gliders and called it HPW, I also heard wombaroo can sometimes be in short supply from australia.
(NOTE: my wombaroo has always arrived in due time.)
So Mrs. brewer decided to make her own high protein powder in america and
copywrite the name so others could no longer steal it.
So critterlove PLUS was born, a USA made, always in good supply HPW food for
gliders. she also has an instant and breeders versions available.
I have not done a complete cost comparison, but my rough estimate was
critterlove plus is slightly more expensive. for now I use wombaroo, but if
I ever have problems with getting it, I would immediately order critterlove plus.