Varying rates of a multicomponent kairomone were evaluated for effectiveness in trapping the Western Spotted Cucumber Beetle (WSCB) (Diabrotica undecimpunctata undecimpunctata) in commercial squash (cv. ‘Golden Delicious’) near Corvallis, OR. Trap catch increased linearly with increasing kairomone rate. Direction of trap placement affected trap catch, with largest number of beetles consistently trapped on south-facing traps. Directional wing and cylinder traps were used to examine colonization patterns of snap bean fields by summer generation WSCB. Initial studies of overwintering adult WSCB in natural and artificial caches showed highly aggregated behavior in sugar beet and spinach fields from November to March. Fall-planted crops to trap overwintering adult beetles may offer a new approach to managing this polyphagous pest.