For homemade shout, mix together one part dawn dish detergent and two parts hydrogen peroxide. And that's it. I put mine in an empty Method bottle but you can use any bottle as long as you can turn the nozzle off. I guess it has something to do with the hydrogen peroxide, but if the nozzle is left on the mix will slowly seep out from the sprayer. When you first make it, it will be about the color in the pictures above but the next day, it will be much lighter like the picture below.