This invention relates to methods for controlling parasitic infestations of animals and their environments, and, more particularly, to methods using isoxazolines to control parasites in or on animals or in their environments, as well as treat parasitoses of animals. The isoxazolines include 4-(isoxazolinyl)-benzamides (specifically, substituted 4-(5-(halomethyl)-5-phenyl-isoxazolin-3-yl)-benzamides) and 4-(isoxazolinyl)-benzothioamides (specifically, substituted 4-(5-(halomethyl)-5-phenyl-isoxazolin-3-yl)-benzothioamides). This invention also relates to compositions comprising the isoxazolines for use in such methods, the use of the isoxazolines to make medicaments for use in such methods, and kits comprising the isoxazolines for carrying out such methods. This invention further relates to the use of the isoxazolines as medicaments, particularly medicaments that can be used in the above-referenced methods.本發明係關於控制動物及彼等之環境的寄生蟲侵擾(infestation)的方法,且更特定地係關於使用異唑啉類來控制動物體內或動物身上或彼等之環境內之寄生蟲的方法,還關於動物之寄生蟲病的治療。該異唑啉類包括4-(異唑啉基)-苯甲醯胺(尤指經取代的4-(5-鹵甲基)-5-苯基-異唑啉-3-基)-苯甲醯胺)以及4-(異唑啉基)-苯硫醯胺(benzothioamide)(尤指經取代的4-(5-鹵甲基)-5-苯基-異唑啉-3-基)-苯硫醯胺)。本發明還關於供用於如是方法之包含異唑啉類的組成物、異唑啉類用於製造供用於如是方法之醫藥的用途、以及供執行如是方法之包含異唑啉類的套組。本發明進一步關於該異唑啉類作為醫藥(尤指可用於前述方法之醫藥)的用途。