My wife bought new toothbrush heads on her way home from work today.
They didn’t fit. She bought the “Oral B IO” heads, but we have a “regular” Oral B toothbrush, not the Shiny Fancy IO design.
And this is after she bought replacement heads last week at another store – which turned out to be “compatible for” a different brand :(
Ugh.
I found some toothbrushes that are really pretty good. I’m travelling with one now. It’s smaller than an electric one, cleans my teeth very well and I don’t have to cart around a charger.