Grout doesn't go around the sink and the counter. That would be silicon. If the stuff is rubbery, it's silicon. You can't clean it. Use a sharp knife and scrape it out. Scrub the area with bleach and let it dry overnight. Then reapply the silicon. It's not hard. Just run the bead all the way around. Then with a wet finger, rub in one smooth stroke over it to make a concave look. Wipe the silicon off your fingers on a paper towel. Let it dry for 24 hrs and it is good to go. I did this three days ago.
It's important to get the gross stuff out...mold, mildew... so it doesn't come back again. That's why I said use bleach and let it air dry.
Stephanie