Omnitrol Orange Spot-On for Extra-Large Dogs Plus IGR over 66 lbs is a Permethrin based product that kills pests on contact. It repels ticks before they attach and mosquitoes before they bite. OmniTrol Spot-On Flea and Tick Treatment Plus IGR for Extra Large Dogs also contains IGR to disrupt the growth, development and reproduction in many insect species. This is a strictly topical product, not absorbed into the bloodstream, so it is safe even if pets are on any medications. OmniTrol collects in oil glands of pets skin and becomes contained in the hair of the pet and is not for use on cats. Kills, repels and prevents re-infestation of fleas for up to 5 weeks Kills flea eggs and larvae for up to 8 weeks Breaks the flea life cycle Kills, repels and prevents re-infestation of ticks for up to 6 weeks Kills or repels mosquitoes, lice and mites on dogs for up to 4 weeks Contains Permethrin for quick, long lasting kill and repelling action Contains Pyriproxyfen (IGR) to break life cycles of many insects..
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