FREE. Family-friendly event for all ages with hands-on activities, bounce house, prizes, and more. Explore field equipment, live tick and mosquito displays, tick-bite prevention tips, rodent control and bee and yellowjacket education. Free lunch and refreshments. 11 a.m.–3 p.m. Marin Sonoma Mosquito and Vector Control District. 595 Helman Ln., Cotati. tinyurl.com/2m542we9.