Hello Heather and welcome to the AIRBNB world. I started renting about 7 years ago and my very first rental completely trashed my home, over 10gs in damage and many upset neighbors. What was supposed to be a few couples turned out to be 50 teenagers for a prom party. You can only imagine. In other cases, I had granparents tell me the house was for them covering for their teenage kids knowing they find it hard to rent telling the truth. I My first two years of renting was quite a learning experience and now, I believe I am an expert at this. In the last five years, I had no incidents and am doing quite well with my property.
Here are some of my tips:
1. Create a template for all new inquiries so you quickly choose a template and repond to the inquiry. In the template, make a nice thank you for the interest note and ask them to confirm:
Number of adults
Number of guests
Age range of the group
Confirm no pets of you dont want any
2. When they respond and if you like what you see and will accept them, let them know you do a 10 minute walk thru with them when they arrive at the property. I do it over the phone, but I dont tell them that. I have them call me when they arrive at the house but they think I will be there to walk thru. I instead call them and do the walk thru over the phone. Now that they think you will be there, it greatly reduces the lies.
3. Request their personal email address and tell them you will send them an info packet. I make up a 6 page document that goes over the rules of the house but is also very informative. I list all the attractions, bars, restaurants, massage, wine tasting, golf courses, food stores, etc... things like that with the phones, websites, distance to house. I am basically trying to become their friend and very helpful to them so they have a great time when they arrive.
In the info packet I let them know its ok if something breaks because accidents do happen. I let them know my own family always breaks things. Just add to let you know about it so it can be replaced before the next guests arrive and promise you dont freak out over these things. I now get calls over broken drinking glasses so this actually works.
4. I too have a non smoking house but I am ok with people smoking outside. It has no effect on the inside of the home and I personally do not think you should let this bother you. I supply rubber ash trays that are very easy to clean. I do however in my info packet make it very clear in big bold letters that if they smoke anywhere INSIDE the house, the CLEANING SERVICE, not me, but the CLEANING SERVICE charges $1500 to remove the smell of smoke from the home and will do whatever it takes to fix that issue. I can tell you this works. The threat of losing security deposit money goes a long way.
Every now and then, a guest does lie and bring more than they say but its now so rare, I don't let it bother me, its not doing any damage and I work on getting as many reviews as I can.
Hope this help.