I bought this little powerhouse the last time it was Wooted. I love love 
it! I use it to clean and sanitize a nightguard and the heads of our Sonicare toothbrushes. I’ve used diluted mouthwash when I don’t have the tablets to clean. This little dude works wonders! Dont tell anyone, but Ive also used it to sonic-clean my gold and silver jewlery. Sparkly and shiney new! DONT USE FOR COSTUME, GEM, OR STONE ITEMS. I cant speak to what will happen. Just make sure you clean it out before reusing it for stuff that you put in your mouth!! Duh… Get this thing, for your self. Its Christmas time! 
Just clean
How loud is it? Do you find it makes unpleasant high pitched sounds? Or more of a buzzing sound. Worried about protecting my hearing.
I have been debating getting the aligners after the NY - thinking of buying this 
Not loud, but it does buzz. I just turn it on in the bathroom and leave it for about 10 mins. Its no louder than your bathroom fan, i would say.
Itbis a great price and you will use it.
Treat Yo’ Self!
I bought it and ordered my aligners a couple of days ago.
Here is to straight teeth and clean aligners