You may find over time and with continued use that the water well in your diffuser might experience some discolouration due to a build up of essential oil residue. Thankfully, there is a quick and easy way to clean your diffuser and restore the interior. We recommend these simple steps for regular cleaning to keep your diffuser fresh and sparkling clean:1. Ensure the water well is dry.2. Place a couple of drops of Lively Living’s Orange, Lemon, or Breathe essential oil on a dry cloth or cotton bud and use it to remove any essential oil residue build up.3. Run your diffuser on a complete cycle using only plain water. 4. We also suggest to regularly clean the inside of the water well with a solution of white vinegar and water for a deep clean. Leave a solution sitting in the base of the water well for 30+ minutes. This again will remove essential oil residue and keep your Lively Living diffuser in its optimum operating state. 5. Remember, essential oils are potent, so do not leave essential oil residue left sitting in the bottom of the diffuser for extended periods in between uses.See our guide for Quick Clean and Deep Cleaning