First time I rubbed so hard the klicky vanished completely ... Joking
This time I remembered (barely, but I did!) - pics of the cleaning thing and magic cotton...
The cleaning thing is aimed as a super cleaner, for example after working on a car or something. This is a supermarket brand.
It's like a toothpaste, but more "liquid"...
The other is known, I think. They call it "magic cotton", and it stinks.
I usually give the cleaned klickys a good rub with the "super gel" thing (I use a piece of tissue, or kitchen paper, or a paper napkin, or a bit ot toilet paper.. )
I only use the cotton when the klicky is really scratched (happened a couple of times, the worse of them with the Galactica bridge officers - scared the Tartarus out of me, and I didn't have more torsos!).