How To Disinfect Retainer Case. Scrub with dish soap for 20 seconds, using a sponge or scrubber appropriate for the material of your retainer case. Spread the solution evenly over the retainers and let it soak in for 5 minutes.
If you don’t have cleaning tablets, you can pour a capful of mouthwash into a glass and dilute it with enough water to just cover your retainer or night guard. Scrub with dish soap for 20 seconds, using a sponge or scrubber appropriate for the material of your retainer case. To disinfect your retainer, submerge it in your favourite cleaning solution, a blend of water and baking soda, mouthwash, or mild dish soap.
And, after you disinfect it, you should store it in a case to protect it until you need to wear it again.
I'm scared to keep it in because i don't want my lungs to fail. You could add a little washing up liquid or antibacterial soap like if it’s more dirty. It’s best to shake the clear retainer dry instead of using a towel or cloth, which can leave fuzzies or tiny strands inside the essix retainer. Make sure you remove as much residue from your retainers as possible by softly brushing and rinsing them under warm water.