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San Diego: San Diego International Airport (SAN)
San Diego International has three pet and service animal relief areas. One is located outside between Terminal 1 and Terminal 2. At the Commuter Terminal, go to the west end; the area is located outside the terminal entrance. There is also an indoor, post-security animal relief area in Terminal 2 West next to the human bathrooms between Gates 46 and 47. The amenities include fake grass, a red fire hydrant, poop bags, and even sinks for the humans to wash their hands.

Washington Dulles International Airport (IAD)
While the majority of the five Dulles pet relief area locations are outside the Main Terminal, two are inside the midfield concourses for the convenience of ticketed connecting passengers. The indoor locations also feature unique ventilation and flushing/drainage systems to maintain clean facilities. All locations are signed and include supplies for disposal of pet waste. Locations inside the concourses: Adjacent to Gate A32, next to the Virgin Atlantic Club; Across from Gate D1. Locations outside the Main Terminal: Look for Pet Relief Areas on opposite ends of the Main Terminal. Exit the terminal doors near the United Airlines Ticket Counter and turn right, or exit the terminal doors near the Delta Air Lines Ticket Counter and turn left. There is also a relief area outside, adjacent to baggage claim number 1.