Attend this free class from 3 to 4:45 p.m. April 20 to learn what to do about stinging wasps before calling a professional or appling pesticide. Entomologist Jennifer Snyder will teach attendees about physical and biological differences between common wasps. Emphasis will be placed non-chemical options and least-toxic chemicals for wasp control. Meet at Three Creeks Library, 800 N.E. Tenney Rd, Vancouver. No registration is required. Questions? Contact Erika Johnson at erika.d.johnson@wsu.edu or 564-397-5738. See other upcoming classes at extension.wsu.edu/clark/community-education/workshops-events/.