Rinsing your glassware before putting it in the dishwasher can be damaging.
Place dirty glassware directly into the dishwasher.
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You may have been taught to always rinse items before slotting them into the dishwasher, but this can actually cause your glassware to suffer over time.
According to Hunker, a home-improvement site, by pre-rinsing your glassware before putting it in the dishwasher, you’re actually allowing that detergent to act directly on the surface of the glass.
Over time, this can cause permanent “etching,” or microscopic scratching, that makes the glass appear cloudy.
Using too much detergent can also cause etching, so it may be worth cutting back a bit if you notice that your dishes lose their sparkle after a few rounds in the dishwasher.