Bob Martin clear flea 57mg tablets are small, easy to use, and a highly effective method to kill fleas. You can use this instead of a flea spray or shampoo. The effects are almost immediate and will provide welcome relief from fleas within 24 hours. It starts killing fleas in 15 minutes and kills 100% of fleas in 24 hours. The tablet can be given directly or hidden in some food and is suitable for pregnant and suckling mothers and puppies from four weeks. Give one tablet to dogs weighing 11.1 to 57kg and two tablets for a dog weighing over 57kg. Give the tablets any day when fleas are detected. Repeat on any subsequent day but do not give more than one treatment per day.