(12) 1 Quart containers. This product is a true breakthrough in drain opener technology. This fast-acting product offers the performance of traditional caustic drain openers, but is biodegradable, odorless, and nonflammable. Its high density, thickened formula is heavier than water, so it sinks and clings to the blockage and begins working quickly. Highly effective against obstructions caused by fats, oils, lint and hair.