On Apr 30, 9:00*pm, KOS wrote:
I have already removed the old toilet and have stuffed a rag in the
sewer opening. This is a toilet that has been in the house for the
past 15 years... I have used a putty knife to remove the old wax ring
- however there is still quite a bit there that is stuck in the
crevices - must I remove all of the old wax ring? thanks
KOS

Get out as much as you can, it does not need to be completely scraped
off.