Is the tube bpa free?

Hello Sharon, The tubes are made of medical grade plastic. There is no scent to the plastic at all. You only smell the aromatherapy essential oils. The pink Himalayan salt does not have an odor but we recommend shaking it before use to loosen some of the tiny salt microns that are extremely beneficial to your lungs. If your recap tightly after each use, the inhaler will last for years. Have a happy and blessed day, and I hope this answer helps, Janet at Urban ReLeaf LLC

Does it ever need a refill or does salt need to be changed?

Hello - these do not need to be refilled. The salt is good indefinitely - as it does NOT expire! The essential oil scent will become weaker over time, but the inhaler is not refillable. It will last a very long time if you recap tightly after each use. Do not share this item, as it is a personal use product. Do not run it thru the washing machine either, as the water will dissolve the salt. Shake gently before inhaling, and the salt microns will loosen and you can breathe them deeply into your lungs. The product may cause a slight bit of coughing, as this is the mucus breaking up in your lungs. This is a very natural, beneficial and drug-free alternative that has helped thousands of people. Blessings, Janet at Urban ReLeaf LLC~~~

does this item contain menthol as ingredient?

No - the ingredients are all natural essential oils and pink himalayan salt. The oils it contains are: peppermint, eucalyptus, tea tree, lavender. This can be inhaled thru either the nose (for sinus issues) or the mouth (for lung issues). Blessings and I hope this helps you.

How often can/do you use this?

Hello, you may use the Neti inhaler multiple times throughout the day. It has a strong scent of essential oils which clear your sinuses. You could use it hourly, if needed. You should notice quick relief. Many people have left feedback about how this helps them breathe easier. It is a 100% natural drug free alternative and also contains pink Himalayan salt which helps dry and clear your lungs. Blessings, Janet at Urban ReLeaf LLC.