Glad to hear Tibbe is home and doing well.
Honestly I really don't know the long term effects on the Petzlife spray I use. =/ I don't even use it that religiously. You're supposed to use it twice a day, and if I can remember I use it like twice a week. I don't brush Uni's teeth that often either, I'm not very good at doing that.

Her teeth are still really white. Maybe we are lucky?