how long does it take a flea pill to work
No more than one treatment should be given per day.. Effects on fleas may be seen as soon as 15 minutes after administration. Between 95% and 100% efficacy is observed within the first 6 hours and 100% efficacy is reached within 24 hours. To help prevent re-infestation, the additional use of a suitable treatment to control immature stages of the flea life cycle in the environment is recommended. If in doubt consult your veterinary surgeon.