Cleaning
You can clean you STIX didgeridoo with most furniture polishes and light scratches can be removed with an automotive polish. Testing on a clear plastic surface beforehand to make sure the polish is suitable is highly recommended.
The inside of your STIX didgeridoo can be cleaned with mild detergent in warm water. Turn the instrument upside down (maybe ask someone to help) and run the water through it.
Tips: Don’t rest your mouthpiece on the ground. Don’t scrub or blast with a hose. Do not block the end and fill with water. Let the inside dry completely before storing the didgeridoo.