Reading the slab before choosing a product
Bare concrete absorbs oil and holds it. A coated or sealed slab resists absorption but is vulnerable to strong alkaline products and to mechanical abrasion from grit under a pad. Using the same heavy degreaser on both leaves one floor stained and the other progressively dulled and thinned. The first thing a plan should record is which slab is which and where the boundary between them falls.
Once that is recorded, the product line follows. Coated areas take a controlled dilution with a defined contact time and a full rinse. Bare areas can take a stronger treatment but benefit far more from prompt attention to fresh spills than from a heavy periodic wash. Absorbent granules kept at the bay and used immediately remove more oil than any scheduled clean. Recording the dilution and the rinse method in writing also means a relief attendant works the same way, which is where most coating damage originates.
