Follow the instructions

are you sure it was dog hair..?

That’s fuckin disgusting ! There is no way it was clean before you put it in. I use the cup all the time but it was definitely clean first! Never had that happen!

If she has that much dog fur in the house, that dog needs to go to a groomer!

Have you considered cleaning your hands, the cup, and your genitals? That would help probably

You NEED to clean it AND YOUR HANDS BEFORE you insert it! Maybe it was a fiber from an old tampon... maybe it was your dog's hair, but what you insert up there is what will be there!
Wash it and your hands thoroughly BEFORE inserting these things up there. You should have sanitized it first with boiling water anyway.
If you ever decide to use it again, you'll need to make sure you clean it beforehand, and try not to get any dog hair on it again before inserting it. Check your hands and the cup for it before inserting it. That's a risk you take when you own pets...their hair is everywhere. I'm glad I'm allergic because it means I don't have to deal with the fur everywhere.

You are supposed to wash your hands before inserting it and taking it out. The cup would not procure dog hair, your hand would have to put it in.

It’s actually pussycat hair.

Don't even know what you've been doing with your dog. Don't wanna know.

Hope you realize the issue is your hygiene... not the cup... 🙃

How in the fuck.....?

What in the fuck is a menstrual cup? What the hell are you women doing?

Trying to avoid the "luxury tax" moron's put into place on women's menstrual products because lawmakers have less idea of how a woman's vagina works than you do