A soft rag and mild soap will clean-up most spills or stains. Goo Gone works very well on the stuborn stains.
Clear Acrylic Plastic Fronts/Backs
Window cleaner works. Pledge Multi-Surface Cleaner works very well. Strong chemicals may cause cracking in the Acrylic.
Ball Bearing Slides:
Add a little Petroleum Jelly to the moving and sliding parts if over time the slide movement is not as smooth.