I'm no help with this, but since you've posted before I presume you know not to expect much of an answer until Sunday night / Monday morning.
I went looking to see what those products you mentioned are and:
1) Can't find a water additive on their site.
2) Interesting, looks doable. (extra points for listing the ingredients on their site) (( US$38 / 8oz ))
3) Ingredients look like
#2 (( US$30 / 15oz ))
I had some problems, mostly with my Alaskan and both my big dogs are now getting 1 Pedigree Dentastix every evening. While it doesn't work too well for the 'cracks between the teeth, it does an amazing job on outer surfaces and gums. My Alaskan is absolutely not going to allow anyone to do anything that gets around his muzzle. I have a DNA kit that I'd like to send back but getting him to cooperate is nigh onto impossible.
Let us know what you chose and eventually how it worked for you, if you would please.
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“Properly trained, a man can be dog’s best friend.”
Corey Ford .