Simple Solutions for me too..... I have used everything too.. I once saw in a show" how clean is your house?" they had the same problem and they recommended using 1/4-1/2 cup of amonia plus 1 gallon of water... you mix it up get a sponge (use gloves) and tap at the area.... let it sit for awhile and then use a brush and start scrubbing.... then get a white cloth(trust me on this one) and damp it up..... remember to open all your windows or use a fan because it does stink... this does WONDERS!! Good Luck everyone!! hope it works for you too!
