I haven't made many container candles, mainly pillars, so I hope the people who make containers chime in. Here are the container instructions from the same place. www.candletech.com/containercandles/ It doesn't appear to have instructions for poking holes, but does mention how the wax will form a well as it cools and you then do a repour. There are some waxes that you aren't supposed to have to do that, but I don't know what ones. When I did make a few containers, I poked holes and did a repour. Not sure what others do?