PetLock Max for Dogs Size:Dogs over 55 lbs 4 Month Supply it also helps neutralize nitrates

it also helps neutralize nitrates and phosphates

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PetLock Max for Dogs Size:Dogs over 55 lbs 4 Month Supply it also helps neutralize nitratesContains the same active ingredients used in K9 Advantix II. PetLock Max is a monthly topical treatment and preventative of ticks, fleas, mosquitoes, biting flies, & lice. KILLS & REPELS ADULT FLEAS CONTROLS HATCHING OF FLEA EGGS KILLS FLEA LARVAE KILL AND REPELS TICKS KILLS LICE KILLS AND REPELS MOSQUITOES REPELS BITING FLIES WATERPROOF PetLock Max for Dogs uses the same active ingredients as K9 Advantix II for Dogs, but sells for a fraction of the