Cost effective, extremely high yield, unlimited storage life and low density for reduced transportation costs. They're are easy to use and versatile, affordable and anti-static, and can be stored for an indeterminate amount of time. Photo does NOT represent the mixture ratio you will receive. Cost effective, extremely high yield, unlimited storage life and low density for reduced transportation costs. They're are easy to use and versatile, affordable and anti-static, and can be stored for an indeterminate amount of time. Photo does NOT represent the mixture ratio you will receive.