Oil filled heater are not the most common cause of house fire they are actually the safest heater you can have in your snake room when used correctly.
Radiant heaters, baseboard heaters however should be avoided.
Oil filled heater should be used with a reliable thermostat as well.
Do not buy a hot filled heater with a digital thermostat they will go out fast and you can end up with a room at 100 degrees.
I have been using a oil filled heater with a t-stat for 10 years now without issue or leak.
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