Don't drain your p-traps - your house will fill with methane/sewer gas. Don't ignore your sewer pipes either; they can burst too. Instead if you really want t

Don't drain your p-traps - your house will fill with methane/sewer gas. Don't ignore your sewer pipes either; they can burst too. Instead if you really want to winterize, pour RV antifreeze down all your sinks, toilets, tubs, showers, etc. RV Antifreeze is also great to pour down all your drains if you aren't going to be in your house for an extended period of time even when it's not freezing cold outside - it evaporates a LOT more slowly than water and thus your home will be far less likely to smell like a sewer when you return.