Bob Martin FleaClear Spot On for Cats is a fast action flea treatment that is suitable for use in home with both cats and dogs. For use on cats over 2 months old, the FleaClear Spot On provides up to 5 weeks protection from fleas with just a single treatment. With this treatment and regular cleaning of your pet?s resting areas, you can eliminate the threat of a flea infestation! Follow all instructions and directions of use carefully. ?