Will pyrethrum kill hookworms in grass?

Pyrethrum is primarily used as an insecticide and is effective against a variety of pests, but it is not designed to kill hookworms, which are parasitic worms. Hookworms typically reside in the soil and are not affected by pyrethrum, as it targets insects rather than parasitic helminths. For controlling hookworms in grass or soil, other treatments such as specific anthelmintics or nematicides would be more appropriate.