The dishwasher safe symbol on plastic is usually a set of stacked dishes or a plate with water drops above it. This symbol is an indication that the plastic item is safe to be placed in the dishwasher for cleaning without causing damage to the item or the dishwasher.
The dishwasher safe symbol can vary slightly in appearance, but it typically looks like a square box with the image of dishes or a plate inside, and water droplets or waves above it. Sometimes, there might be text accompanying the symbol, stating "dishwasher safe" or similar wording.
It's essential to follow the dishwasher safe symbol and any accompanying instructions provided by the manufacturer to ensure that the plastic item can withstand the high temperatures and intense water pressure of a dishwasher without warping, melting, or releasing harmful chemicals. Not all plastics are dishwasher safe, so if you don't see the symbol or any specific dishwasher-safe instructions, it's best to hand wash the plastic item to avoid potential damage.