Putting a plastic mug in the dishwasher can lead to various outcomes, depending on the type and quality of the plastic. Some plastic mugs are designed to be dishwasher-safe, while others are not. Here's what might happen:
Dishwasher-safe plastic mug: If the mug is labeled as dishwasher-safe, it should be able to withstand the heat and water pressure inside the dishwasher without significant issues. These mugs are made from higher-quality, heat-resistant plastics that can handle the dishwasher's cleaning cycle.
Non-dishwasher-safe plastic mug: If the mug is not designed for dishwasher use, several things can happen:
a. Warping or distortion: The high temperatures inside the dishwasher can cause the mug to warp or become misshapen, ruining its original appearance and functionality.
b. Discoloration: The combination of hot water, detergent, and dishwasher heat can cause the plastic mug's color to fade or change.
c. Leaching of chemicals: In some cases, dishwasher detergents and high temperatures can cause certain chemicals to leach out from the plastic, potentially affecting the taste or safety of beverages consumed from the mug.
d. Cracking or melting: Low-quality plastic mugs or those not designed for dishwasher use may crack or even melt when exposed to the high heat of the dishwasher.
Release of harmful substances: If the plastic mug contains harmful substances or is made from low-quality plastic, the dishwasher's heat and detergents can accelerate the release of these substances into your drinkware, potentially making them unsafe to use.
To avoid damaging your plastic mugs in the dishwasher, it is essential to check their care instructions. Look for labels or markings on the mug that indicate if they are dishwasher-safe. If you're unsure, it's best to hand wash the mug using warm soapy water to ensure its longevity and safety.