Optifade camouflage from GORE is the first and only concealment system ever scientifically designed around the way a hunter's prey views the world. It's the only concealment system to combine a symmetry disrupting macro pattern with the fractal geometry based micro pattern designed to become nothing in the eyes of prey at engagement ranges of 20 meters and beyond.
In general, washing your gear in cold or warm water with mild non-deoderant powder laundry soap (non-toxic, biodegradable types preferred) and hand drying it are the best ways to clean Sitka products.
Freeze it and then pick it off with a dull object. Rub the remainder out with a water and white vinegar solution and then wash with detergent.
Like most synthetics, Sika Gear will melt or burn when exposed to flames or direct heat. Use caution when around fires, stoves and hot metal surfaces!