A comb 1000 to collect and subsequently crush parasites, comprising a body 100 having a handle portion 101, a row of closely spaced teeth 200 projecting outwardly from the body and a crusher 300 engaged to one of the teeth or handle. The teeth are configured to collect said parasites when combed through hair and present upper surfaces which form a planar first face. The crusher has at least one planar crushing surface configured to move to abut against the first face of the teeth to cause the parasites to be crushed between the at least one crushing surface and the first face of the teeth. The crusher is preferably either arranged to hinge or slide (fig 14) relative to the teeth. More than one crusher may be provided.
