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Refering to problem 2, in line with problem 1, if we reduced the number of toothbrush handles you need to go through for example to 10-30 handles in a lifetime, then the obvious solution would be to change the head, like you can with electric type tooth brushes, reducing the waste and by ensuring you have a fresh and new bristled brushed, which is where the problem usually resides in the toothbrush.
<h3>Suggestion 3</h3>