The general practice of adding laundry detergent to the bottom of a washing machine drum, rather than directly on top of the clothes, is based on a few reasons:
Proper distribution: Placing the detergent at the bottom ensures that it mixes with water effectively before coming into contact with the clothes. When water enters the washing machine, it creates a swirling motion that helps distribute the detergent evenly throughout the drum. This allows for better cleaning performance and prevents concentrated detergent from directly contacting the clothes, which could potentially cause fabric damage or staining.
Avoiding residue: Placing the detergent directly on top of the clothes may leave behind detergent residue, especially if it doesn't dissolve completely or if you accidentally pour too much. Residue can accumulate on fabrics, leaving them feeling stiff or causing skin irritation. By adding the detergent to the bottom, it has more opportunities to dissolve and distribute evenly in the water, reducing the likelihood of residue on the clothes.
Preventing stains: Some laundry detergents contain concentrated formulas or chemicals that could potentially interact with fabrics directly, leading to discoloration or staining. By adding the detergent to the bottom, it has a chance to dilute with water before coming into contact with the clothes, minimizing the risk of any adverse effects.
It's important to note that washing machine manufacturers may provide specific instructions regarding the placement of detergent. Always refer to the manufacturer's guidelines for your particular machine, as they may have specific recommendations for optimal detergent placement.