Used tissues are organic. We compost any paper towels or tissues, except those that have chemicals like cleaning agents on them.If you have a worm bin, they are good for the worms, since the carbon in them counteracts the nitrogen-rich kitchen scraps.

Putting tissues in the compost or worm bin is about the only to recycle used tissues, since you can't recycle them.

I don't quite understand the argument about not wanting to touch them.  There are lots of things in the compost bucket that I don't want to touch.  That's why I just dump the bucket into the worm bin.

BTW, mucous is NOT grease (and even grease will break down in a compost environment - it just takes longer).

It's funny that we're so fussy about bodily secretions.  I'm much more uneasy about plastics and toxic chemicals.

Bart