Join KOST 103.5 on Saturday, October 5th at the grand opening of the new Mission Viejo Petco store, located at 27815-A Santa Margarita Parkway. Petco is celebrating with three days of great deals and fun for the whole family, and KOST’s Kari Steele and the KOST Street Team will be there Saturday, October 5th from 12pm-1:30pm. Join us! Petco. The power of together.