Prospective tenant states they only smoke outside

[Eddie Werner]

I have a non smoking property and prospective tenant states they only smoke outside. Curious how others handle this. I was thinking about adding to the lease that they forfeit SD and will need to pay for any smoke remediation ( new carpet, paint, etc) if they do end up smoking inside. I have a move in checkist and will document move in status with pictures and tenant signing off on everything. Any other ideas?