Bob Martin Flea Tablets are small, easy to use and a highly effective method of killing fleas. Used instead of a flea spray or shampoo the effects are almost immediate and will provide welcome relief from fleas within 24 hours. This tablet can be given direct or hidden in some food and is suitable for large dogs, pregnant and suckling mothers as well as puppies from 4 weeks. Suitable for large dogs over 11Kg in weight. Pack contains 3 tablets.