You should burn your candle for no more than 4 hours in one go. Never leave a candle unattended when burning. When you extinguish your candle you should use a snuffer instead of blowing it out.
To ensure the best and even burn from your candle, you should keep the wick trimmed to around 1cm in height.
To reduce tunneling in your candle always ensure you have an equal burn pool across the diameter of the candle when burning. Burn for approximately 3/4 hours to achieve this with our metal tin candles.
You should use a 4 hour burn, non scented candle in a wax melt burner.
This is all down to personal preference. A wax melt does not come into contact with a naked flame so will have a stronger scent. A candle lasts longer, and also can look quite nice on display in your home