Medicated Bath

The vet recommended a weekly medicated bath for poor Jethro with a dilute bleach and baking soda rinse. So we use the garden hose for an outside shower, but with all these infected sores all over his body he can’t really be toweled dry. After 15 hours yesterday he was still damp in places. They want us to do that to him once a week? I think we need a different plan.