Humidification Trays
Really? You use them? Hmmm.
From a realistic standpoint, a humidification tray adds about as much humidity to the room as you will by standing there and exhaling. Maybe less, actually.
Let's say you buy one - at about the same price as a small, cool-air ultrasonic humidifier. You fill it with perhaps a half a gallon of water. That water sits in the tray for days, maybe oven days and days. Yes, there is enough evaporation from it that it eventually dries out, but at what rate? If you put that same half a gallon into an ultrasonic humidifier it may last 8 or 10 hours. Through the humidifier you may raise the humidity level of a small, closed room in a house running a furnace from a level of about 20% to perhaps 55-70%, which is excellent. If the door is open you may still hit 40%. Simply put, the evaporation rate from a tray is absurdly too low to accomplish anything.
They DO effectively collect water so you can water on them. But you can also buy much less expensive trays, put a layer of hardware cloth on top, and you're good to go.
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