Secured to fingers well
Sometimes a toothbrush is daunting to a dog, but most of them want to put our fingers in their mouths anyway. Admittedly, this also gives them a reason to stop wanting our fingers as much, depending on the dog and the toothpaste.  I doubt they are intended for reuse but they do seem sturdy enough to hand wash or put into a delicates net bag a few times.  They are well made for being such tiny finger socks.
Rating: 5 stars