Kills fleas on pets in 24hours. These tablets can be given directly into the marathon maybe mix into a small portion of your Pet’s favourite food and given immediately administration one tablet on any day worthy are seen on your Pet repeat on any subsequent date if necessary do not give more than one treatment per day please can be detected by part of the Pet’s coat and examining skins for signs of flea activity or by combing gets coat with a fine tooth flea frequent scratching or excess grooming can also be signs of flea infestation.