Window Warsh — the streak-free glass cleaner that works in sunlight The short version: Window Warsh is Undrdog's ammonia-free, dye-free glass cleaner built to do the two things most window cleaners fail at: clean without streaking, and work in direct sunlight without flashing off. Safe on window tint, safe on automotive glass, safe on home windows. One product for your car, your boat, and your house. Who it's for: Car owners who lose the battle with streaky windshields, boat owners cleaning marine glass and cabin windows, and homeowners who want one glass cleaner that works on tinted or clear glass without ammonia stink. What Window Warsh is engineered to do Clean streak-free without the ammonia haze most household glass cleaners leave behind. Handle sunlight — designed to work on warm glass without the flash-drying that causes streaks in the sun. Protect window tint — no ammonia, no dyes, safe on aftermarket tinted automotive and residential glass. Work on multiple surfaces — automotive glass, cabin glass, home windows, mirrors, gauge clusters, screens (spray onto a microfiber, not directly). Why ammonia is a problem Ammonia-based glass cleaners (the classic blue kind) can degrade the adhesive layer in aftermarket window tint over repeated use, causing hazing, bubbling, and edge lift. Ammonia also fumes strongly, which is unpleasant in enclosed spaces like a cabin or car interior. Window Warsh uses a surfactant-driven formula instead — the same category most modern automotive glass cleaners use. How to use Window Warsh Shake the bottle to mix. Spray directly onto the glass — or, for screens, onto the microfiber towel first. Wipe with a clean, dedicated glass microfiber towel using a straight-line pattern. Flip the towel to the dry side and buff to a streak-free finish. For heavily hard-water-spotted glass: use Water Spot Remover first, then follow up with Window Warsh. Where Window Warsh works Automotive glass: windshields, side windows, rear glass, sunroofs, headlight/taillight lenses. Marine glass: cabin windows, windshields, hatch covers, port lights. Residential glass: interior and exterior windows, mirrors, shower doors. Tinted glass: factory tint and aftermarket tint. Screens: phone, tablet, and computer screens (spray onto towel, not the screen). Not for: uncoated wood, unsealed natural stone, or matte paint. Spot-test polished chrome and painted trim near the glass edge. Frequently asked questions Is Window Warsh safe on window tint? Yes. It contains no ammonia and no dyes — both of which can damage tint film over time. Safe on factory and aftermarket tint. Can I use Window Warsh in the sun? Yes — that's one of its design points. The formula is built to handle warm glass without the flash-drying that causes streaking. That said, results are always best on cool glass in shade. What towel should I use? A dedicated glass microfiber towel (usually a waffle-weave or short-nap tight-weave). Do not use the same towel you use on paint — residue transfers. Will Window Warsh remove hard-water spots? Fresh spots yes. Baked-in mineral deposits are actual etches that need an acidic remover like Water Spot Remover. Use WSP first, then Window Warsh. Can I use Window Warsh on my touchscreen or phone? Yes — but spray onto the microfiber towel, not directly onto the screen. Never spray liquid directly onto electronics. Does Window Warsh work on shower doors and hard-water-prone home glass? Yes. For hard-water buildup, pair with Water Spot Remover to dissolve deposits first, then use Window Warsh for daily maintenance. Is Window Warsh ammonia-free? Dye-free? Yes — both. The formula is engineered around a surfactant system rather than ammonia, which is the standard approach for tint-safe glass cleaners. Packaging may not exactly match featured images. Sprayers not included with 8oz sample sizes. { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ {"@type":"Question","name":"Is Window Warsh safe on window tint?","acceptedAnswer":{"@type":"Answer","text":"Yes. It contains no ammonia and no dyes — both of which can damage tint film. Safe on factory and aftermarket tint."}}, {"@type":"Question","name":"Can I use Window Warsh in the sun?","acceptedAnswer":{"@type":"Answer","text":"Yes. The formula is built to handle warm glass without the flash-drying that causes streaking."}}, {"@type":"Question","name":"What towel should I use?","acceptedAnswer":{"@type":"Answer","text":"A dedicated glass microfiber towel — waffle-weave or short-nap tight-weave. Do not use the same towel as on paint."}}, {"@type":"Question","name":"Will Window Warsh remove hard-water spots?","acceptedAnswer":{"@type":"Answer","text":"Fresh spots yes. Baked-in mineral deposits need an acidic remover like Water Spot Remover first."}}, {"@type":"Question","name":"Can I use Window Warsh on my touchscreen?","acceptedAnswer":{"@type":"Answer","text":"Yes — spray onto the microfiber towel, not directly onto the screen."}}, {"@type":"Question","name":"Does Window Warsh work on shower doors?","acceptedAnswer":{"@type":"Answer","text":"Yes. For hard-water buildup, pair with Water Spot Remover to dissolve deposits first."}}, {"@type":"Question","name":"Is Window Warsh ammonia-free and dye-free?","acceptedAnswer":{"@type":"Answer","text":"Yes — both. The formula is engineered around a surfactant system rather than ammonia."}} ] }
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