Leonard, fortunately I did not have the problem with the mucous so I don't have any first hand knowledge of what to do, however, some OCF members recommended seltzer water. I found a post from June 2012 by Charm2017 talking about this. Charm was a very knowledgeable and helpful OCF member who passed away a few years ago, but his posts contain a lot of valuable information. Hope this helps. Wishing you the best!
Susan
SCC R-Lateral tongue, T1N0M0 Age 47 at Dx, non-smoker, casual drinker, HPV- Surgery: June 2005 RT: Feb-Apr 2006 HBOT: 45 in 2008; 30 in 2013; 30 in 2022 -> Total 105! Recurrence/Surgeries: Jan & Apr 2010 Biopsy 2/2011: Moderate dysplasia Surgery 4/2011: Mild dysplasia Dental issues: 2013-2022 (ORN)