David
TVWBB Pro
If ashes dumped int he woods is killing flipper, then there's a lot of guys on here killing flipper. Ashes, I'd say is right mighty fine. Used cooking oil? I wouldn't dump that near the house as I wouldn't want to attract vermin. Doubt any rats are interested in my charcoal ash. If I'm balling up greasy aluminum foil & tossing it into a trash bag, I've also dumped the ashes into the same bag to save some steps.
If you're only cooking on the top rack, adding a disposable foil pan on the lower rack will help contain a lot of mess. Especially if you're doing a single pork butt. Doesn't work as well with 3 racks of ribs. But, it's just clean up. Pretty easy even if you do make a mess.
For a 22"? What size clay saucer are you using and where did you get it? Curious is all...
Got it either at Home Depot or Lowe's don't really remember. Can't measure at the moment, but I just measured from the tip of the built in ledges of the cooker and got one that the lip of the clay pot rested on them. I also added a few more washers to ensure a good fit after I first put it in...........................d