h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

My Colgate toothbrush had been playing up these last few days, and has given up the ghost. The problem is not in the batteries, so I need a new brush head. Today, there was snow on the ground but no snowfall. I wore denim skirt and ordinary shoes, but, given the rain we got later, nylon skirt and hiking boots might have been better!

The Colgate toothbrushes and separate heads I found have a bigger brush head than I'm used to. (Why did they replace the design that worked perfectly well?) I expect that would be worse at getting into awkward spots (e.g. right at the back, or the inward sides of teeth where the tooth line curves) and make it more likely to make me gag. In the end I bought a whole new Wisdom brush. It has a 2-minute timer, but that is no use to me. As much paste as can be put on a brush head without it falling off when the brush head rotates lasts less than 2 minutes' brushing.