I applied the Sergeants Natures Guardian squeeze-on to my pet and after 3 weeks I have fleas again. How come?
The Nature’s Guardian products contain natural ingredients that kill adult fleas. As the fleas hatch from eggs and develop from larvae, they come in contact with the product and die. If there is an usually high amount of hatching fleas, the product may need to be reapplied. The Nature’s Guardian products can be used as often as necessary.
