The cost for a $7 device is charged to customers at a price of $300.

Again whatever you feel comfortable with in terms of escalation here.No personal experience with this device and not sponsored, but I've looked into FreshAir Sensor previously for my Airbnb, and it is a simple plug and play device that detects cigarette smoke.

.- In regards to privacy I think we'll all be ok, Apple is taking away facebooks ability to acquire data from mobile devices.

@Oren Pfeffermann, my personal view on washers and dryers in rentals is as utilitarian devices so I buy basic model used appliances often from a used appliance store.

If it plugs in to an outlet you can use a kill a watt type device online to show power used.

They can get it repaired at their expense or I would simply remove the device.  

Often it seems that they are arguing very different things but in someways they are not all that dissimilar. 

I just signed a lease on a SFH that includes $30/month for each device to rent (not rent to own).

This becomes critical as the 'web' is already at 40% mobile devices.

More than half of your guest are going to search for travel on their mobile device.