Review on NPS Spilfyter Extra Strength Universal Sorbent Pad – 18x16 Inches – Lightweight and Dimpled – Ideal for Occupational Health & Safety Products and Handling Hazardous Materials by Michael Godo

They absorb liquids well but are very thin. If you spill a large amount, e.g. For example, a gallon of coolant or oil on the floor, you'll need lots of them. One person said three or four of them could hold five gallons of liquid, but I highly doubt that. Other brands of these pads are three times thicker than this one, but they fit.