Should I use glass votives with the candles?

Votive candles will burn longer in a tight-fitting votive container. Most votive containers are glass.

When using a glass votive holder, the burning candle will heat the glass up and will cause any ice or snow it is sittin on to melt. When the candle goes out the glass could become frozen into the snow or ice. 

It is best to put a plastic cup or disc in-between the glass votive and the snow/ice to keep the glass votive from freezing into place.