@Yvette67
@Kelly149 has got it right Yvette, claiming this will get you nowhere, and it is just one of the things you have to stay on top of. Carelessness and thoughtlessness are a couple of major traits in the guest community.
I had this happen a couple of years ago, a guest asked if he could cook up half a dozen sausages on the barbie so he could eat them cold after he left. I directed him to the barbecue and even lit it for him. That was at 8.00am. That night around 11.30 pm after I had called it a day, as I was turning in I walked down through the barbeque area and immediately felt the heat from this still sizzling away barbie! He just cooked his snags, pulled the lid down and walked away....and we are on bottled gas Yvette.....that effort cost me about $24.00!
These things do all teach us something though Yvette!
I have also the situation a few times where I did not turn a gas tap off properly and the next time I go to use the barbie, the cylinder is empty. So, guest Lee's effort with the snags was the last straw. I installed a timer tap on the propane line, and after 40 minutes it automatically turns off. I don't have to bother to turn the supply cylinder tap off any more, even if I get carried away and in my haste to eat forget to turn a burner tap off, the timer valve takes care of it for me.....It was a good investment Yvette, maybe you should consider one yourself! This is readily available in Australia and my guess is it would be the same in the US!
Cheers......Rob