Welcome to the deo info page, if you are new to Natural Deo I recommend you have a read through this post:
https://www.dirtyhippie.co.nz/pages/deodorant-help
even if you are not new to natural deo it is a good read.
Cardboard Deodorant tubes!!  They are a push-up tube.  Which can be buried or composted - no waste.   The cardboard tubes can be a little tricky to get started, you may need to warm the tube by holding with your hands around it for a moment or two.  Try not to push them up too far and not to get them very wet, they are a thick strong tube so pretty hardy,  so worth it for our planet.  
Samples are available for each of the probiotic deo's they come wrapped in compostable waxed paper and each sample should last 1-2 weeks.