Marble surfaces - Think about pH in chemistry class? Foods and cleaners have pH too. Swiffer Wet Jet, with pH 10, is alkaline. Not good for delicate surfaces like marble (pH 6-8).
Laminate floor - Swiffer can cause alkaline problems and may not be the best choice. According to Amanda Weatherholt from Housekeeping Associates, the Wet Jet leaves floors streaky and doesn't really clean.
Vinyl floor - Swiffer Wet Jet is not recommended. Hard to clean, less effective than a regular mop. Requires four pads for a kitchen, bad for the environment and wallet. Leaves a sticky residue if not cleaned quickly.
Wooden deck - Don't use Swiffer Wet Jet on your wooden deck! Its thin pads won't handle the rough surface and will get torn apart.
Plastic mats - Swiffer won't clean bathroom plastics well. You can wash plastic mats and shower curtains in the machine to remove spills and dirt, says Jennifer Gregory from Molly Maid.
Carpets and rugs - Your carpet might hide harmful germs and allergens. A Swiffer won't clean it effectively.
Indoor wood floors - Swiffer works great on tile and wood floors, but struggles with corners where dirt collects, says Sean Parry, founder of London's Neat cleaning company.
Indoor tiles - Parry prefers the E-Cloth Deep Clean Mop over Swiffer. It uses water-based tech, needs only a bit of water for effective cleaning—no extra products, no risk of residue or floor damage.