I have a 20 gallon galvanized can outside that I dump the stuff into. But the important part is where you sit the can for a couple of days or so. More fires happen from sitting the hot bucket on combustible surfaces than from dumping ashes. Well, except for the guy 10 miles south of me that just took them out and tossed them in the woods and got a bill from the county for firefighters fighting a fire that took out over a hundred acres of woods.