There is a caulk ring on my bathroom floor. I recently got a new toilet, and the base is smaller than the one that was there before. As a consequence, I can see the previous owner's caulk every time I walk in to the bathroom. I scraped their caulk with a putty knife and got it off, mostly. But I still have the scraped up remains of their caulk staring me in the face.
My first thought was obvious: scrape steel wool across the caulk, but I'm afraid of the damage it might do. Are there solvents that are especially useful for caulk clean-up? Maybe some type of scrubber that's not as abrasive but will still get the job done? I don't know if it helps, but I'd guess it's nine-year-old caulk.
Below is a picture, because looking at my caulk may help you give me advice.
(Sorry about all the puns. I just can't resist when I'm talking about caulk. In fact, my dad had come over to help install the toilet, and he brought the supplies. Afterward, someone asked me what the white stuff on my hands was. I told her, "I was handling my dad's caulk!")