I have a home-made hand-fed, but patterned after the Mark III. My ash pan is 16"x16"x8" deep. It will hold about 2 or 3 days of ash from my Wyoming high-volatile, high-ash bitumnous coal. I load every 12 hours. Every few days, I will emty the ash pan 12 hours after the last "shaking", just prior to shaking again. By then, my ashes are cool enough that I can dump them directly into our metal dumpster in the alley. It is a little heavy (40 lbs or so), but it's better than trying to lift an entire garbage can of ash, or dump the pan every 12 hours.
I have never had a dumpster fire with this method (though I did have one when I dumped it after only waiting about 3 hours!
). It's best if I can dump the ash before the neighbor or the wife puts any garbage in the dumpster, but I do it even if garbage is present.
However, I noticed that the bottom of the steel dumpster is rusting out very quickly. I believe that the garbage truck will get a surprise very soon when the entire dumpster load of garbage falls out of the dumpster bottom when the truck picks it up. Maybe that's part of my garbage fee?
Another way I keep my in-house mess down is with some "funnels" I built under my grates. I cut some sheet-metal and attached some funnels under my grates (to what I call "grate yokes" that hold my grate axles). The funnels direct the ash into the pan, instead of letting alot of it fall beside the ash pan. I now only scoop "escaped" ashes out of the stove about once every week or two instead of every day or two. With a few mods to the funnels when I get time, I'll only need to scoop about once a season.