1. Wrap a hand towel around the foot you are trying to protect.
  2. Place a bathroom sized trash bag over your foot and secure the bag above the ankle with tape. (Bread sacks, zip locks and grocery bags do not work. They tend to have many tiny holes in them.)
  3. Place another bag over the first bag (one bag always leaks) and secure the bag a few inches above the first. Secure the bags with tape. A rubber band will not give you a secure seal.

If you prefer, there are cast/dressing protectors for purchase from your pharmacy for around $10 for two.