About Dadson Laundry: Your Gateway to Success Dadson provides card, phone application & coin laundry equipment rental & services for multi-family apartment units. This includes apartment buildings, mobile home parks, condominiums, hotels, convalescent homes, universities and military bases. No building is too big or too small for our specialists. Dadson has offices in Los Angeles, Phoenix, Las Vegas and surrounding areas. A representative personally manages each account to ensure all your needs are fulfilled.