I use Castrol "Super Clean", found in the auto dept of Walmart. I hadn't heard of it till I worked a housekeeping job at a hotel once, and they used it to deep clean the shower/baths, baseboards and anything else washable. You can use it in varying strengths, from light to full strength. Best used with gloves though, but it works wonders with cigarette smoke stains etc. Anyway, ever since then, I keep a gallon in my cleaning supplies.
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