Today I managed to get rid of the (ugly) logo by simply rubbing my finger on it then using the scouring pad side of a sponge.
EDIT :
By the way, I received an e-mail from PCGamingRace.com last month asking for my opinion regarding this :
We are deciding on changing up our logo on our mouse mats to be more minimalistic, smaller, and durable to rubbing off.
We have a new design in mind and I would like to know if you guys think we should switch to this new logo.
Show Image
(http://i.imgur.com/sWjynGc.jpg)
I really like the look of that logo much more. It's much cleaner than the "sticker" logo that's currently being used.