Its never a good idea to leave things of this nature un-attended, candle warmers, steamers, potpourri pots, etc., most are made very cheaply, "Trust" I wouldn't.
Most likely the battery is flat. Have you left the radio or any lights on overnight?
no
No, the oven was not left on overnight.
They may be unsafe to eat if left out overnight and should be thrown out.
does squash spoil if left overnight or two days
No if the candle not lit it probably won't melt
No. It is not safe to eat turkey left out overnight in any container.
No, it may not be safe to eat after being left out overnight.
Yes, I accidentally left the milk out overnight.
Wax.
No. Stew left out overnight would not be safe to eat, covered or not - unless where it was left out was as cold as a refrigerator.
No.