while we are up here in Payson, in our Bungalow in Gold Canyon we keep 2- 5 gallon buckets of water full. The water keep humidity in the trailer so the wood doesn't dry out. When we go back every 2 weeks we make sure the p-traps are full and so is the 5 gallon buckets. Never heard about anti freeze in the p-traps. I know I did that when we had our home down south up at 6000 feet and gets real cold so not to freeze the pipes.
2011 jayco 33rlds, 2002 Ford excursion, v-10, 3:73 gears 4x4 mine. 2008 Suzuki sx-4, hers. Retired Air Force, now Retired.