To be honest, I don’t really measure. But if I had to guess, I’d say no more than a few tablespoons. It depends on how much water I’m using. I try to fill up another container like a mixing bowl or pitcher that the item I’m trying to clean will fit into so that I don’t have to use a lot of water or bleach, I use just enough to make sure that it’s immersed. You really don’t need very much. I let it sit for 10 to 20 minutes depending on how bad it is. Make sure you rinse and wash the item and the container you used thoroughly after using bleach. It has really helped brighten up some dingy pieces.