A Chewy.com I asked and they recommend for his water bowl
 
Dental Fresh Advanced Plaque & Tartar Water Additive for Dogs  
https://www.chewy.com/dental-fresh-a...rtar/dp/113469 
and for brushing teeth  
Sentry Petrodex Veterinary Strength Enzymatic Poultry Flavor Dog Toothpaste  
https://www.chewy.com/sentry-petrode...ength/dp/56546 
I am skipping a day, possibly two but his breath is clean and most importantly, his teeth are white instead of that ugly green brown of tartar.  
I am going to order what you have and see if that works better. I have been  
really happy but will try something different if it means no brushing.. but  
it appears that brushing is like washing your hands just need to do it more often than not..  
Again will try  
Thanks a ton for the tip !!!