Ask the Builder: How to keep kitchen and bath drains clog-free

Yesterday I was perusing a national news website whose headlines more and more seem to resemble those of a sensational supermarket tabloid. Being a syndicated newspaper columnist, I find this transition most interesting.
One particular headline blared about the five things you should NEVER put down your kitchen drain. I’ve been a master plumber since age 29 and have had the very good fortune to replace old kitchen drain lines and unclog newer ones choked with gunk and who-knows-what. I tho