Like all Bootz bathing fixture surfaces, slip-resistant is also made from porcelain (glass) - milled granular to provide safe comfortable traction. The granular slip-resistant and smooth glossy finish are 'fired' together, ensuring complete bond, color, quality, durability and longevity. Over time, improper cleaning techniques (using abrasive cleaners and/or scrub pads) can wear-down the microscopic peaks of the porcelain (glass) slip-resistant; thereby, diminishing the anti-skid effect. Fortunately, there are a number of after-market products available to improve slip-resistance.
Less expensive textured appliques, bath mats, etc., can provide low-cost temporary solutions. Longer lasting solutions are also available providing a superior value, preserving the sanitary nature of porcelain, and renewing slip-resistant safety. SlipDoctors offers a variety of easy-to-use DIY products to renew slip-resistant bathing surfaces - apliques, coatings, and acid etching. Their products are highly recommended and available online (for single-use applications) and directly from SlipDoctors (bathtub & shower products).
When using aftermarket slip-resistant products, remember all Bootz products are made of porcelain-finished steel, so you'll need a product designed for porcelain. Be sure to follow the manufacturer's directions for safe and successful application.
What you see is “surface rust”. The fixture is not rusting, but foreign metallic particles trapped on the slip-resistant surface have oxidized and left a stain. The particles can be the result of hard water, drywall nails, cleaning tools and/or an unprotected bathtub during installation. As these materials are rinsed away, they can also gather around the drain giving the appearance of a rusting drain. These rust stains are known as “surface rust” because the particles stain the glossy porcelain surface.
To completely rid the bathtub of these stains (surface rust) and bring the finish back to the original glossy condition, use an oxalic-acid based cleanser (like Bar Keepers Friend or Zud), and a stiff nylon brush (not an abrasive scrub pad). Unlike many abrasive cleaning products, oxalic is a natural acid that is not harmful to skin or the environment, and works very well for household cleaning and especially well on oxidized (rusted) surfaces.