Marcel gets gunky/crusty at times - and it's difficult to remove when the gunk hardens. Well, I thought I'd try his "finger toothbrush" one day - and it worked really nicely! I dip it in warm water and "brush" near his eye and it really loosens the gunk. And, bc the brush is low-profile, soft, and small - I'm not worried about the brush hurting his eye.
The brush looks something like this (mine is a bit different):
http://images.1800petmeds.com/images...0/1011_420.jpg