I usually use old gallon orange juice containers (screw on cap) and leave my used fluids in a box plainly marked at my local oil change place's front door after hours.

I thought by law they had to take this stuff.... maybe I was wrong?

__________________
~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net