I was never a fan of Gulp until a trip down to the Florida Keys.
I saw the stuff on sale in slabs to cut into replacements for cut live bait !
Tried the stuff and it outfished fresh & live bait.

I've been using the Gulp minnows for Smallmouth for years now. Won't go out without em. No luck with Perch, but as others have said, live shiners are cheaper anyway.