Scent Diffuser

Powerful and low-maintenance Diffuser.  Most Aromatherapy Diffusers rely on significant human input, it's part of the fun really, choosing the oils and setting it all up. This is more of a Set-and-forget machine, because even the best Sensory Rooms can sometimes smell a little off-putting, and all of them require human to human engagement. 
Requires setting up (once) using the simple App so that it runs only during sensible times.  Then let it run.  

A large bottle (250ml) of scent and sensible diffusion settings mean monthly maintenance at most, you might get much longer.  Consider buying additional units for scent variation, using more sophisticated settings in the App.