The present invention relates to isothiazoline compounds of formula (I) wherein the variables are as defined in the claims or the description, which are useful for combating or controlling invertebrate pests, in particular arthropod pests and nematodes, and to a method for producing them. The invention also relates to a method for controlling invertebrate pests by using these compounds and to plant propagation material and to an agricultural and a veterinary composition comprising said compounds.
