I suspect this mousepad (or maybe it's the mouse?) can't be fixed easily.
There's a similar problem I've noticed in some 15 year-old (or so) European cars like BMW or VW - which have always tended to use a lot of synthetic plastics (as opposed to say, ordinary rubber) on the outer coating of some rubber/plastic-coated controls/knobs in the passenger compartment. What seems to happen with them is that the outer coating (goodness knows what it is made of) of the control/knob starts to chemically break down. First it becomes slightly tacky to the touch, and then it becomes progressively more tacky to the point where some of the surface material sticks to your skin when you touch it, and it sort of spreads around. It can be removed from the fingers with white spirit, but if you try white spirit on the actual knob/control, then it seems to make the problem even worse for a while until the white spirit has evaporated and the whole substrate melts a bit and becomes gooey.
I've tried all sorts - e.g., including plastic/vinyl cleaner (is usually silicone-based), soap and water, hydrogen peroxide, salt solution, sodium bicarbonate (the main ingredient of baking soda) solution, white spirit, methylated spirit, isopropyl alcohol, gasoline (petroleum) - and they variously have either no effect or make matters worse. I have not yet found anything that sets the tacky surface hard(er)/less tacky.
The only solution so far is thus to replace the part, or (say) apply talcum powder to the the surface of the part. Yes, the latter is a kludge, but it reduces the tackiness and could be a useful temporary workaround - works on babies' bottoms too!
Actually, thinking of babies' bottoms, I haven't tried paraffin oil on these knobs/controls, but that might
make the surface smoother/slicker. On the other hand, paraffin (kerosine) is a petroleum product, so it might make it tackier. Either way, paraffinum liquidum
(paraffin oil) is non-toxic/harmless (non-allergenic) - it's a tried-and-tested main ingredient in baby oil and is safe for use on babies bottoms (e.g., where there may be nappy rash) and is apparently a main ingredient in many commercially available skin cremes/oils and vaginal/anal lubricants also (it doesn't harm sensitive mucous membranes).
I hasten to add that my only experience with its use is as a generic baby oil and in the form of a herbal skin oil recommended by a doctor, and which bears the brand name Bio Oil:
|Bio Oil: Looks like the base is liquid paraffin, which has been safely used for donkey's years. |
Manufacturer is Union Swiss (Pty) Ltd. (South Africa).
Contents of Bio Oil:
* Paraffinum Liquidum,
* Cetearyl Ethylhexanoate,
* Isopropyl Myristate,
* Retinyl Palmitate,
* Helianthus Annuus Seed Oil,
* Tocopheryl Acetate,
* Anthemis Nobilis Flower Oil,
* Lavandula Angustifolia Oil,
* Rosmarinus Officinalis Leaf Oil,
* Calendula Officinalis Extract,
* Glycine Soja Oil,
* Bisabolol, Parfum,
* Alpha-Isomethyl Ionone,
* Amyl Cinnamal,
* Benzyl Salicylate,
* Citronellol, Coumarin,
* Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde,
* CI 26100
See also: https://en.m.wikiped...iquid_paraffin_(drug)