The New Pig Oil-Only Absorbent Mat with Color Flare technology is specifically designed to change color to reveal light-colored oil leaks that are nearly invisible on standard absorbents. The mat "flares" bright blue to provide a clear visual indication that mineral oil or hydraulic fluid is leaking. Ideal for both indoor and outdoor use, these mats are UV-resistant, repel water and are impervious to rain and other wet conditions.