Final answer:
Vacuuming after flea treatment is crucial for removing eggs, dead fleas, and stimulating pupae to transition into adults, making them susceptible to treatment. Sanitation is an added benefit.
Step-by-step explanation:
Homeowners should vacuum after treatment for fleas in order to enhance the effectiveness of the treatment. One of the key goals is to suck up eggs, which are difficult to eliminate through chemical means alone. In addition to eggs, vacuuming also removes dead adult fleas and can help by causing flea pupae to emerge from their cocoons due to the disturbance, making them more vulnerable to treatment.
This action simulates the pressure and warmth of a host, effectively luring the pupae to transform into adults, which are then exposed to the treatment. While sanitation is an additional benefit, the proactive mechanical control strategies that vacuuming offers are crucial in breaking the flea's life cycle and preventing future infestations.