Plato's makes a range of limited-ingredient dog treats. We use the Small Bites Duck flavor with our pooch. There are some preservatives in there (glycerin and zinc propioate).
Have you tried lamb lung or lamb ear? You can buy bulk bags of both on Amazon, and our local pet stores carry them too. The lung is crunchy and semi-breakable to use in training. The ears are more of a "go chew on this" treat.
We have a 9 week old Bichon that we've had for a week now. Since Bichons are prone to separation anxiety, I've been doing tons of research ever since we decided to get one so I could work on preventing it.
We didn't get him an exercise pen, but what we have done is on-leash tethering. We'll leash him (with a harness on--NOT a collar!) and tie the leash to a sturdy object. This allows him to roam within a certain distance so I can keep an eye on him but also do my own thing. We're hoping this will teach him independence, as it prevents him from following us everywhere, and he also has started to play with his toys by himself.
Another thing I've done is teaching the "stay" command. Whenever he's tethered and I have to, say, use the washroom, I make him sit and then stay. He's gotten pretty good to the point where I can use the washroom quickly, come back, and he hasn't even moved. Again, I wanted him not to follow me everywhere and be okay with not having me in sight at all times.
Finally, the best thing I've done yet is covering his crate. I'll just throw a huge sheet over it so he can't see anything at all. It actually calms him down, and I often hear him chewing his toys while in the crate. I like to crate him frequently even when I'm home so he learns to be okay being by himself in the crate. I tend to use only high-value treats in the crate. I'll feed his kibble in treat-dispensing toys, give him bully sticks, and this product which he loves: https://www.amazon.ca/NATURAL-POLYMER-N-Bone-Teething-Chicken/dp/B00X1A4UPM/ref=sr_1_6?ie=UTF8&qid=1473772782&sr=8-6&keywords=n+bone
I found them on Amazon. I searched for 3x2" morale patches and found a bunch that I really liked.
It's probably okay to use once in a while but I wouldn't do it every time. I had the same problem and wound up using Honest Kitchen's Bone Broth powder to make broth instead, one can lasts me forever and the ingredients are simple and healthy. https://www.amazon.com/Honest-Kitchen-Broth-Turmeric-Canister/dp/B0169FBOVI
My SDiT loses his shit for these treats called Chicken Chips. They're easy to break into small pieces so they won't break your pup's calorie intake. I also use a the kind of rawhide that's dipped in gravy for high distraction environment training (airports, theme parks, other dog reactivity). I use the rawhide to gain his attention and then keep it with the chips--it works very well. After he's over the distraction, we move to a low distraction area and I let him knaw on the rawhide for 2 minutes and then put it away so it doesn't lose its "specialness."
Here's a link to the chips All Natural Chicken Chips- Dog Treats (Medium- 8 oz. bag) https://www.amazon.com/dp/B00BXLQCPC/ref=cm_sw_r_cp_api_EUZNxbQH6XRS7
> Damp-rid
Damp-rid is the Product name, you can Make your own or you can just buy some calcium chloride anhydrous and sit it out where the cats cannot get to it, either way you don't want the cats getting into it in any form (Damp-Rid, home made or straight up calcium chloride anhydrous) so be careful with it...
Interesting...
It might be time to start adding this to your "bug"out bags...
It was many years ago I did this, so I don't remember the needle sizes. You could try a leanlix or lickity stick while he gets his fluids to keep him entertained... ( https://www.amazon.com/leanlix-Grass-Fed-Beef-Treat-1-25/dp/B00HRI6LOM/ref=sr_1_8?s=pet-supplies&ie=UTF8&qid=1469062530&sr=1-8&keywords=lick+treat )or make a frozen treat for him to lick. (I froze applesauce just make sure it doesn't have any kind of sweetener in it)