Micro Fiber Towels, skip the machine for removal. Bonnnets load up with wax or sealant and you need to change them often. Hand removal with high quality mf towels is the way to go.

rops:
Sure, everything eventually loads up with dried residues from waxes or sealants.
Just like one doesn't usually use just one towel for removal, the same applies for bonnets with a machine. One should have a good number on hand if their aim is to use machine removal.
A machine can aid in the case of a quite difficult carnauba paste to remove.
It's not often today that one encounters a paste that was as difficult as the old Blue Coral, or Simoniz, but they are out there. Colly 476 and 915 can both be a little difficult at times, and I'm sure there are quite a few others which have a high concentration of nuba in them and can prove to be murder.
MF Bonnets can often be simply turned inside out, just as Terry Cloth Bonnets as well could be, to double the usage of each bonnet.
Often what I did with very difficult nubas in the past, was not to necessarily rely on the machine for total every last little bit removal, but just help me break up a good portion of it, then come behind with the finishing hand wipe down.
On large vehicles with the nuba pastes, it can sure cut down on time, and wear and tear on the hands, arms and shoulders and also save some sweating.