She has pasty butt on her feathers. Her vent is open but she is a mess. Snowfall is melting and everything is wet and gross. Hard to keep coop floor dry and they free range outside on the old piles of shavings,hay ect that are now not covered w/snow. Should I wash her butt now or wait until the weather warms up more? Days (35-40 degrees) Nights(20) and what would be recommended for a soap??? Dry weather I am waiting for!!!!