Spectra Sure Plus - IGR is for complete monthly control of fleas, ticks, and chewing lice infestations in 23 - 44 lb dogs.
- Kills adult fleas, flea eggs, flea larvae, and prevents the development of pupae for up to 3 months
- Remains effective even after bathing, water immersion, or exposure to sunlight
- Contains the same active ingredients as frontline plus