Combinations of acaricides and insect growth regulators for control of fleas without emesis in animals

1. A method of controlling a flea infestation on an animal, comprising administering to the animal an effective amount of a single-dose oral formulation comprising spinosad, lufenuron, microcrystalline cellulose, croscarmellose sodium, and magnesium stearate, and optionally an artificial flavor, wherein the formulation is suitable for oral administration once every 30 days at a dose of at least about 20 mg of spinosad per kg of body weight of the animal, and about 10 mg of lufenuron per kg of body weight of the animal.

2. The method of claim 1 , wherein the animal is a dog and the formulation has greater than about 75, 90 or 95% residual efficacy at 30 days post-administration.

3. A method of controlling a flea infestation on an animal, comprising administering to the animal an effective amount of a single-dose oral formulation per month, the formulation comprising spinosad and lufenuron at a dose of at least about 20 mg of spinosad per kg of body weight of the animal, and about 10 mg of lufenuron per kg of body weight of the animal.

4. The method of claim 3 , wherein the animal is a cat.

5. The method of claim 3 , wherein the animal is a dog.

6. The method of claim 3 , wherein the animal is a domesticated dog.

7. The method of claim 3 , wherein the formulation is a tablet or capsule.

8. The method of claim 3 , wherein the formulation has greater than 75% residual efficacy at 30 days post-administration.

9. The method of claim 3 , wherein the formulation has greater than 90% residual efficacy at 30 days post-administration.

10. The method of claim 3 , wherein the formulation has greater than 95% residual efficacy at 30 days post-administration.

11. The method of claim 3 , wherein the single-dose oral formulation is administered about every 30 days.