1. A method of treating a mammal, non-human, infected by ectoparasites or at risk of infection by ectoparasites, the method comprising administering to a mammal, non-human, a composition comprising 4-chloro-3-ethyl-1-methyl-N- [4- (p -toliloksi) benzyl) pyrazole-5-carboxamide or a salt thereof, wherein the mammal is non-human is selected from livestock, and domestic mammals experimental mlekopitayuschih.2. A method according to claim 1, wherein the mammal is non-human, infected ektoparazitom.3. The method according to claim 1, wherein the mammal is non-human, at risk of being infected ektoparazitom.4. Method po.1 where ectoparasite is chlenistonogoe.5. A method according to claim 1 wherein the ectoparasite is selected from semeystvili.6. A method according to claim 1 wherein the ectoparasite is selected from., Ili.7. A method according to claim 1, wherein the composition is a solid veschestvo.8. A method according to claim 1, wherein the composition is a liquid or gel.9. The method of claim 8, wherein the administration comprises applying a liquid composition to a mammal that is not a chelovekom.10. A method according to claim 7, wherein the introduction comprises contacting a mammalian non-human, with a solid kompozitsiey.11. A method according to claim 1, wherein the administration comprises spraying, dipping or drawing strokes mammal other than the chelovekom.12. A method according to claim 8, wherein 4-chloro-3-ethyl-1-methyl-N- [4- (p-tolyloxy) benzyl) pyrazole-5-carboxamide or salt thereof is present in the liquid composition in a concentration of from 0.01 to 50% mass.13. A method according to claim 8, wherein 4-chloro-3-ethyl-1-methyl-N- [4- (p-tolyloxy) benzyl) pyrazole-5-carboxamide or salt thereof is present in the liquid composition in a concentration of from 0.02 to 10% mass.14. A method according to claim 1, wherein1. Способ обработки млекопитающего, не являющегося человеком, зараженного эктопаразитами или подверженного риску заражения эктопаразитами,