I finally had time to clean the mousepad and my G502. Finally it's no longer disgusting : r/G502MasterRace
How to clean g502 mouse wheel - YouTube
Logitech G502 HERO Wired Optical Gaming Mouse with RGB Lighting K/DA, White 910-006095 - Best Buy
G502 Lightspeed Full Teardown / Switch Replacement : r/MouseReview
How to Open the Logitech G502 Lightspeed - iFixit Repair Guide
Amazon.com: Hotline Games Colorful Mouse Anti-Slip Grip Tape for Logitech G502 Hero / G502 Lightspeed Wireless Gaming Mouse Skin,Non-Fading,Sweat Resistant,Cut to Fit,Easy to Use,Color F-01 : Video Games