Get the gunk off old enameled bathtubs and sinks by applying a paste of 2 parts baking soda and 1 part hydrogen peroxide. Let the paste set for about half an hour. Then give it a good scrubbing and rinse well; the paste will also sweeten your drain as it washes down.
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Cream of Tartar
Let this simple solution of cream of tartar and hydrogen peroxide do the hard work of removing a bathtub stain for you. Fill a small, shallow cup or dish with cream of tartar and add hydrogen peroxide drop by drop until you have a thick paste. Apply to the stain and let it dry. When you remove the dried paste, you’ll find that the stain is gone too.
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Got a stubborn stain or ring around your white porcelain tub that refuses to come clean? Call out the big guns by spraying it with oven cleaner. Let it sit for a few hours, then give it a thorough rinsing. Warning: Do not apply oven cleaner to colored porcelain tubs; it could cause fading. And be careful not to get the oven cleaner on your shower curtain; it can ruin both plastic and fabric.
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Yellow spots on your enamel bathtub or sinks can be lessened by mixing up a solution of salt and turpentine in equal parts. Using rubber gloves, rub away the discoloration and then rinse thoroughly. Don’t forget to ventilate the bathroom while performing this cleaning task.
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Need to do a quick tub cleanup before guests arrive? Grab the handiest item — your shampoo! It does a great job on soap scum because it rinses clean. You can use it to buff a shine into your chrome faucets as well.
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Put the shine back in your porcelain sinks and bathtubs by giving them a good scrubbing with full-strength white vinegar, followed by a rinse of clean cold water. To remove hard-water stains from your tub, pour in 3 cups white vinegar under running hot tap water. Let the tub fill up over the stains and allow it to soak for four hours. When the water drains out, you should be able to easily scrub off the stains.
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