Mine is simply tucked under the counter in my bathroom. It is a little far away from the tub so I still get a bit of gurgling when that drains, but works well for the bathroom and kitchen sinks. I really was not wanting to run a vent pipe up through my
cob wall or have it run adjacent and be visible so I did some research and found these little beauties. Just a one way valve that lets the air in but no stink in.