After every meal or at least two times a day.
It is recommended to brush your ferrets teeth about every other week
It's important to brush your teeth after every meal so there is no plaque buildup.
to prevent bat breath
Twice a day.
I'm no expert, but i would think that, unless you don't care about your teeth, teenagers should brush their teeth the same way everyone else should.
Get a tooth brush and tooth paste and there brush your teeth….DUH!!
People who eat too much candy or chocolate. Or someone who doesn't brush their teeth often.
you have to brush there teeth up and down
You have to brush any dog's teeth!
That film like stuff is most likely because you have not brushed your teeth thoroughly, I get it often when I am in a hurry but when I brush at night I brush until that film has completley left my mouth.
It means your teeth are dirty and you need to brush them better and more often. You also ought to visit the dentist because dirty teeth often have cavities.
You should brush your dogs teeth about once a week. You should also give hime dental bones, you can find them at PetSmart, to chew on. At least every month