Think Crucial Humidifier Drops, 2oz

550+ USES PER BOTTLE FROM A 33% SUPER CONCENTRATE FORMULA: One 2 fl oz bottle delivers over 550 humidifier refills at 2 drops per 1-gallon tank. That works to roughly 4+ heating seasons of daily use - refill after refill of clean humidifier care | 33% SUPER CONCENTRATE - JUST 3 FOOD-GRADE INGREDIENTS: Distilled water, citric acid, and sodium citrate - that is our full ingredient list. No silver, no copper, no metals, no surfactants, no fragrance, no dye. Built for the label-reading household | REDUCES MINERAL DEPOSITS BETWEEN CLEANINGS: Hard tap water leaves white mineral film on tank walls and white dust on nearby furniture. Our citric-citrate chelant system sequesters calcium and magnesium ions before they precipitate inside the tank | COMPATIBLE WITH EVAPORATIVE & WARM-MIST HUMIDIFIERS: Works with Honeywell, Vornado, AIRCARE, Essick Air, and Vicks tank models. Precision dropper dosing - 1 drop for 0.5-gal tanks, 2 drops for 1-gal, 4 drops for 2-gal; add 50% more drops in hard water | MADE IN USA FOR CLEAN-INGREDIENT HOMES: For the bedroom, living room, office, or whole-home humidifier owner who wants a non-metal water conditioner with no proprietary mystery ingredients. Sourced domestically; bottled in Hollywood, Florida USA | COST-EFFECTIVE SOLUTION: At approximately $0.024 per refill, this super concentrate formula provides exceptional value with over 550 uses from a single 2 fl oz bottle, covering multiple heating seasons of continuous daily humidifier operation