I didn't know what to expect, just cleaned mine the 1st time today. I just pulled the baffles out and let them soak in charcoal starter while I rounded up a toothbrush. The gunk came off much easier than I was anticipating, but I only had ~100 rounds of CCI SV through it. Washed the tube out with the same starter fluid. I had a little packet of that grease so I smeared a tiny bit on the "dirty" sides and a little on the threads, we'll see how it cleans up next time.
I knew nothing about suppressors, when I went to pick up my 10/22 LVT (threaded barrel), the FFL guy had the Little Bird there, unused but second hand from an estate. Catch was, it didn't have the tool so $200, $400 out the door with stamp - which was just shy of 3 weeks. I called AB and explained I had the new suppressor but no tool, they sent me one no charge.
I don't know how it'll hold up long term, the threads in the tube wearing out seems like it might be a problem down the line, but the little thing is sure quiet with the CCI SV and a rubber bolt buffer.