Hi all, I ran across this forum when researching new toilets and ran across it again when searching for how to remove a rusted/broken toilet flange closet bolt, as seen in the attachment. The right one crumbled while removing the nut, even though it took very little force. The left one doesn't look a whole lot better. I read several threads such as these that indicate I should have a t-slot to slide the old bolts out of, but I don't see anything obvious.
I'm guessing my bolts are threaded into the flange? I can just barely slide a paint scraper under the flange where the bolts are, and I don't detect a nut on either. If they are threaded in, would they be regular or reverse threaded? Or is this even in the DIY realm?