I was at Walmart today and saw these Slime Tire repair bottles in 16oz, 18oz, and 24oz options. I bought the 16oz bottle (under $5) to give a try. The green slime emptied out real easy into a Ziploc bag. With a little water all the rest of the residue came right out. There is a little spot on the side of the bottle for the plastic straw that it comes with. Don't know if that can be used for anything or not. I weighed the empty bottle with and without the straw and either way my scale only showed 1.3oz. The cap is neat. The main white part screws on tight. When it is turned upside down I get either a slow drip or no drip at all. Squeezed it and get a nice little stream. The black part screws on as well. I put the caps on squeezed the bottle pretty well while shaking it and got no leaks.
I think I got the pics attached. First post so don't know if doing this right. Just thought I would post this in case someone else can get a use out of this. I am going to field test this soon with my supercat.