I'm not sure on the Dog food. I've talked with Guys that Use it Exclusivly. I think they like it better then nothing and it's a Cheap way of getting something going, BUT.... I think bread is Better, and Donuts are even better.
Starting this late I'd use meat too. I put meat in a bucket and in 3 days had Instand MAggots. You won't believe how Quick you turn Meat into Mush by leaving it out this time of year. I would take one bucket of the meat and Hang it in a Tree for Scent. It walso keeps bears busy trying to get it out. And they are smart.
I would use any Fruit/vegies that you can get ahold of. Test and Text again show that the Bears like 'um. We tested Chocolate by the 5 gallon loads against other stuff and The Blue berries worked BY FAR the best !!!
Bread from the Day ol' Bread store, Wonder bread outlet is the way to go. at the Place we go there is a 12-15 person waiting list. Fortunately I know the LAdy and SHe likes me so We usually only have a day or two turn around if she's there. She hooks us up well
Don't listen to Gunner, He's more of a Yuppie hunter, Get all the Grease you can and Dump it. He doesn't like the Mess... But if you want a bear and Want to get scent out there, get the Grease !! We dump it on the Dog food and it works OK. I don't know if they actually like eating it but they sure track the heck out of it around the hillside.
'Gunner came up with the Pop and Jello and I like that Idea, It adds to the Dogfood and Spreads out the Sweet smell.
I would also do a Burn. We typically do a Honey burn but it is Very Limited, It lasts only for a short time. This year I was trying experiments with PAncake surup/honey and Oil and Honey. The Oil and surup seemed to put enough moisture in the Container to last longer... It's like a Viagra Honey burn
Other then That get your Site going so I can Slip up there and Buy my 2nd bear tag

Errr... I mean so You can Get a bear
PS< I had mixed feelings about the Oats and Rolled Barley mix but time and Time again the Bears seem to have their POOP filled with that stuff.... Also, you are correct thatthe Dog food swells and Isn't that good once wet. Next year I'm buying the Cheap Food and Also Mixing in at a 1/3 ratio a Gravey train type food so even when It gets wet it has some Flavor and Texture.