Re: bath tub drain plug removal
The 'push to close' style plugs are screwed in place. Grasp the top of the plug and spin it counter-clockwise. There are about 3/8" worth of threads, so you'll have to spin it 10 times or so before it backs out of the hole. Conversely, when you install the new plug, you don't just screw it down tight, you screw it in about half way, push it to close it, then spin it down until a seal occurs.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!