Treats flea infestations on pets. Starts killing adult fleas on the pet within 30 minutes. One dose lasts 24 hours. Use when pets are likely to be exposed to fleas, such as in dog parks, at shows, or other areas. Also may be used prior to surgery, boarding, or grooming. Active ingredient is Nitenpyram, which interferes with the normal nerve transmission of insects, effectively killing them. Not a preventive. For dogs and cats over four weeks of age. Package of 6. 

• Kill adult fleas on your pet with a single dose
• Safe to give once daily if re-infestation occurs
• Use on all dogs, puppies, cat, kittens in your household over 4 weeks old - for optimum flea control