Clean toothbrush attachments

I have an electric toothbrush, but the essays I find exaggeratedly expensive! So why change the toothbrush, if there is another way:

You take colorless thread and wrap it around the bristles, so that the original shape is reached again! Then the brush head is brought under bubbling boiling water and placed for 10 min in a glass with the water.

The bacteria are gone, the toothbrush has its old form (works in any case with Oral-B brushes) and you have saved 9 EUR.

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