Long lasting and biodegradable trap seal liquid. BlueSeal has a specific gravity lower than water or urine and therefore remains for an extended period of time in the trap with urinal use. BlueSeal remains indefinitely in the trap with no use, sealing trap odors. BlueSeal has zero evaporation at 100°F and does not freeze above -70°F. Then no freezing feature allows facilities to eliminate or reduce urinal winterization costs. Commercially available cleaners will not harm the BlueSeal in the EcoTrap.