Wow, I think it's so cool that you're making your own! Btw, what kind of "grinder" do you use?
tjdmom has some great comments, as always, and I know she does so well w/ PMR and would help you if you want to go that way.
I feed the pre-made too and may consider making my own someday, if I can stop being lazy

. My boys' teeth are gorgeous, partly bc of the enzymes in the raw meat, and I think the rest is from the Bully Sticks.
Just as an aside, if you ever want to add a probio/dig. enzyme product to the food (at meal time,
not with the pre-made as the freezing wouldn't be good for it) - I like this one:
Nature's Farmacy - Store - Product Details