Use a squeegee and dustpan as shown to retrieve most of the oil and pour it right into your used oil container. If the floor is dirty, place a section of window screen over your funnel before you pour. Save the expensive absorbent for the oily residue, not the main spill. It's very difficult, I won't kid you. My one technical assistance responsibility here at MnTAP is the vehicle maintenance industry and I'm still learning new information about the regulations.
Training helps to understand the rules.
Last year, we partnered with the MPCA on six evening workshops on the rules and prevention ideas. The audience feedback was positive. There may be more workshops later this fall, so stay tuned. If you think there are enough shops in your community that would be interested in a workshop, let me know. There is a lot of information on this web page from many different sources.