If you haven't experienced the power of original Blue Dawn plus white vinegar, you are in for a treat. Remove the top of plastic spray bottle and fill it half full with hot white vinegar (heat up in a glass in the microwave). Fill the rest of the bottle with Blue Dawn liquid dish washing soap. Apply the top tightly. Gently shake the bottle to mix. That's it. You now have a powerful cleaning product that will melt soap scum and tub and shower buildup, clean sinks, appliances and just about anything. Just spray it on, scrub, rinse and be amazed. for tough soap scum build up, spray the mixture on and allow it to sit as long as overnight. Then, scrub and rinse. Test first if you are hesitant about using it on certain items.