Once mixed, activator to solution,  best  to use within  30 days.
My dogs had bad breath and plaque build up been using for 5 days breath improved a lot tartar starting to dissolve. I have used this product in the past maybe 8 yrs ago for a shepard  and 2 poodles with bad plaque/breath and it worked wonders. The vet for my shephard, get was getting spayed at 6 yrs, said she had very good teeth for her age .
Rating: 5 stars