How long does scrubee/ Buffy last?

I recently got both to try and I’m really happy with how they work. Scrubee seems a little softer but smells better and Buffy seems a little harder/ more durable but I’m not as excited to use it.

I’m curious how long these products tend to last for you? How often do you use them and how much with each use?

I keep mine dry between uses, but is there anything else I could be doing?