American Cyanamid Company

Mary Ehlers Doscher

Kathleen Heaney

Robert E Diehl

Susan Mancini Cady

Donald P Wright, Jr

Dale G Brown

William David Steber

Phillip Wayne Hayes

Douglas Rugg

Kurt Allen Schwinghammer

David Craig Sheppard

The present invention provides methods for synergistic control of ectoparasitic arthropods with a synergistically effective amount of a combination of the macrocyclic lactone moxidectin and an arylpyrrole compound. Also provided are methods of protecting animals from infestation and attack by ectoparasites with said combination. The present invention also provides synergistic insecticidal compositions comprising as essential active ingredients the macrocyclic lactone moxidectin and an arylpyrrole compound.

Synergistic ectoparasiticidal methods and compositions

The invention relates to certain stable microsphere compositions containing a fat, a wax or a mixture thereof; an active ingredient selected from LL-F28249&agr;-&lgr; compounds, 23-oxo or 23-imino derivatives of LL-F28249&agr;-&lgr; compounds, milbemycin compounds and avermectin compounds; an antioxidant and, optionally, an oil, a semi-soft fat, a fatty acid derivative or mixture thereof. The invention also relates to a method for introducing and maintaining levels of the active compound in the blood of warm-blooded animals for extended periods of time and for the prevention or treatment of infections and infestations caused by helminths, nematodes, acarids and endo- and ectoparasitic arthropods in warm-blooded animals by the parenteral administration of compositions of the invention.

Stable compositions for parenteral administration and their use

There is provided a method for the control of pyrethroid-resistant insects and the protection of animals therefrom which comprises contacting said insects with a toxic amount of a formula I arylpyrrole compound. ##STR1##

Use of arylpyrroles for the control of resistant insect populations

This invention relates to a method for detecting the flukicidal activity of a compound or compounds comprising feeding a portion of liver tissue of an animal treated with the compound or compounds to a free-living flatworm and observing the flatworm for mortality or morbidity.

Method for detecting flukicidal activity

This invention relates to methods and compositions for treating, controlling, preventing and protecting warm-blooded animals from infestation and infection by helminths, acarids and arthropod endo- and ectoparasites by administering or applying to the animals a nitropyrrole or pyrrole carbonitrile compound.

Methods and compositions for protecting animals against attack and

This invention relates to methods controlling, and protecting warm-blooded animals from infestation and infection by helminths, acarids and arthropod endo- and ectoparasites by administering or applying to the animals a substituted arylpyrrole compound.

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Trenton, NJ, United States of America

Mary Ehlers Doscher