Process for controlling eradicating or preventing infestations of animals by Ixodid ticks

Abstract

A process for the prevention of infestation by Ixodid ticks, or for the control or eradication of infestations of Ixodid ticks, which process comprises applying to the media to be protected or to the infested media an effective amount of a composition comprising as active ingredient a thienopyrimidine derivative of general formula I: ##STR1## xwherein R.sup.1 is chosen from alkyl optionally substituted with hydroxy, methoxy, cycloalkyl, aryl, heteroaryl, and heterocycloalkyl groups; alkenyl; alkynyl; cycloalkyl; R.sup.3 is chosen from hydrogen, alkyl and acyl; or R.sup.1 and R.sup.3 together form a saturated or unsaturated alkylene or heteroalkylene bridging group; R.sup.2 is chosen from hydrogen, hydroxy, mercapto, halo, cyano, optionally substituted-amino, optionally substituted hydrazino, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, cycloalkyl, aralkyl, aryl and trifluoromethyl; R.sup.5 and R.sup.6 are independently chosen from hydrogen, optionally substituted alkyl, halogen and aryl; or R.sup.5 and R.sup.6 together form a saturated alkyl bridging group; or an optical isomer thereof; or a tautomer thereof; or a salt thereof; and a carrier therefor.

Dependencies are inferred from the claim text.