Yes, washing clothes can effectively kill fleas. Fleas are small insects that thrive on animal hosts and their surroundings. They lay eggs in fabrics such as clothing, bedding, and carpets. Washing these items with hot water (at least 130°F) and detergent is an effective way to kill fleas.
The high temperature of the water kills both adult fleas and their eggs, preventing them from hatching into new larvae. Additionally, using a laundry detergent will help break down any dirt or debris that may be providing shelter for the fleas.