A more thorough cleaning once a week with a retainer (Retainer Brite) is also recommended. Leaving trays in a bath for 10 minutes usually allows for a thorough cleaning and neutralizes any offensive smells. Remember to rinse under water and give trays a quick scrub with a soft bristle toothbrush after removal from bath. If you are looking for an effective but more economical home-made option, you can soak your aligners in diluted vinegar or hydrogen peroxide solution which is mixed with 50% water.
Lastly, your Invisalign cases need cleaning too. When you remove your aligners they often have excess saliva that can easily be transferred to your case. After a few days, these cases can turn into a science project! Giving them a good rinse daily can solve this problem. As with the Invisalign aligners a gentle scrub with a soft toothbrush can help them stay hygienic.
It is also a good idea to sterilize your Invisalign aligners before storing them. As you finish with each set of trays, sterilize them using a denture cleaner and place them back in the re-sealable bag in which they arrived. If you need to reuse them for any reason at a later date they will be clean and ready for use.