It is an excellent add-on!
Thank you and congratulations to the Dev!
Also thank you to the Dev, for answering my questions at Github.

I was using Containers in Firefox without add-ons. But only after installing Temporary-Containers that I understood the usability of this add-on. It is tremendously productive to have an add-on that automatically opens everything in Containers, and after "x" minutes after using the Container (closing Tab), the same add-on automatically cleans all the mess, all the cookies, webgarbage, everything. All the process is automatic... very nice.

By the way, all the Dev' explanations in the main page, also are very useful. Specially the comparison with other methods.

Again, thanks to the Dev!