I made a couple of gallons with chunked beaver and dobbins bait solution over 10 years ago and still have some left. I use bait sparingly and about 1/3 of my predator sets. The beaver/dobbins works as good as it gets. But it is good to use different baits to give some variety. There are a number of good commercial baits from powder river to any number of small time producers.
I also use muskrat and rabbit carcasses, scraps and trimmings from deer butchering, mice, and bacon grease.