Reddit mentions of Aligner Chewies - White - Unscented

This is a chewie: https://www.amazon.com/OrthoBands-AC-25WPP-Aligner-Chewies-Unscented/dp/B00GBHS91S

Basically, it's a tiny pool noodle that you bite on if your teeth are being a bit stiff and don't want to shift for a new aligner so you've got an air gap. Since it's a bad idea to chomp a tray directly into place because it can get damaged, and impossible to even gently clench when you have an open bite, the chewie becomes a squishy thing you can bite on instead until the tray gets to it's spot.

If the tray tracks perfectly, then you are right, you don't need the chewie.

https://www.amazon.com/dp/B00GBHS91S/

I just got these. They're essentially the same ones I got from my Ortho

I would recommend Aligner Chewies! Sometimes we don't do a good job of making sure the aligners are fit snugly on our teeth so even if you have them on for 2 weeks, your teeth might not have shifted the way it should've. At least, that's what my ortho stated. Chewies are cheap and I just chew on them when I put my aligners back in. My opinion is that they're worth the (small) investment. Two Chewies have lasted around five months so far and they're still in good condition. You might be able to find them cheaper elsewhere on the Internet too.

Hopefully it is OK to post a link here. Try these - they are little rubber rolls to bite down on (supposed to be used with invisilign braces to seat them properly).

https://www.amazon.com/OrthoBands-AC-25WPP-Aligner-Chewies-Unscented/dp/B00GBHS91S

Just an aid to seating the aligners - which is all Acceledent is, but cheaper. Need no batteries! ;)

Like these - https://www.amazon.com/OrthoBands-AC-25WPP-Aligner-Chewies-Unscented/dp/B00GBHS91S