Q: The drain in one shower in our home keeps plugging up. We put baking soda and vinegar down the drain and water flows better, but in about a month, the drain is plugged up again. What should we do?

We Canadians deal with extreme winter challenges each year, and one of the most annoying (and mysterious) happens when rooftop plumbing vent pipes get plugged with frost. This is called “ice capping” ...