Rather than use spray or gel
could you try giving her some
low fat chews; here I'm thinking
trachea and sinew (like Zooplus do)
or a recreational bone as it's more
likely to shift plaque (mechanical
removal)
steffxxx
I most go on the website and look
at the "science" as my understanding
is that plaque can only be removed
by mechanical means.
Big hugs to Piper