Soak aligners in lukewarm, soapy water for 20-30 mins, rinse after soaking, and avoid using hot water.
Soak aligners in a vinegar and water solution for 20 minutes, then rinse with cold water.
Soak aligners in baking soda and water solution for 60 minutes, then rinse before placing them back.
Clean Invisalign aligners with Sterialigner solution containing rubbing alcohol and sodium bicarbonate; soak for 3 min, and rinse with lukewarm water.