# Shared Bathroom Rules > Households can mix up brushes and cups. Simple systems for sharing space. Includes simple steps and when to ask a dentist. ## Guides - [Color Coding Brushes](https://sharing-a-bathroom-toothbrush-tips.pages.dev/color-coding-brushes/): Color coding brushes means giving each person a distinct brush color so nobody grabs the wrong one by accident. - [Separate Holders: A Practical Guide](https://sharing-a-bathroom-toothbrush-tips.pages.dev/separate-holders/): Separate holders keep each brush apart and upright so heads do not touch and bristles can dry. - [Why You Should Never Share a Brush](https://sharing-a-bathroom-toothbrush-tips.pages.dev/never-share-toothbrushes/): The standard advice is to never share toothbrushes, because a brush picks up saliva, bacteria and sometimes blood from its user. - [Guest Toothbrush Etiquette](https://sharing-a-bathroom-toothbrush-tips.pages.dev/guest-toothbrush-etiquette/): Good guest toothbrush etiquette comes down to one rule: a guest never uses a brush that belongs to someone else, and a host never makes a guest feel awkward. - [Kids' and Adults' Products](https://sharing-a-bathroom-toothbrush-tips.pages.dev/kids-and-adults-products/): Children and adults can share a bathroom, but the products on the shelf should not be interchangeable, because size, fluoride amounts and technique differ by. ## About - [About Shared Bathroom Rules](https://sharing-a-bathroom-toothbrush-tips.pages.dev/about/): not medical advice, how the site is funded and how guides are made ## Optional - [RSS feed](https://sharing-a-bathroom-toothbrush-tips.pages.dev/feed.xml)