No problem to brush your teeth, it becomes a pleasure. The children are delighted. I went on holiday with friends who had children, and seeing my own use, they have all called. So it makes me come gift ideas for me it was a revelation;) The seller told me by email, in the trampled, I receive much the right model and in the end, no surprises as I have read from other reviews so I advise to go through Pharma360 !! They are very serious.