We have a garbage disposal and every time I see my wife scraping stuff in the sink to grind up, I clean up the mess and throw it away. My wife doesn't understand but then again she has never replaced a toilet, or cleaned a drain either...
I have a 55 gallon trash bag in a garage container with a lid. Scrape in there. From kitchen just need to open door and there it is. Bag goes out every trash day. Recycle bin is next to it. Can in kitchen is just for paper.