Almost anything goes. PACK CARE H and wash your pack in warm, soapy water, then rinse. Nylon fabrics do not like heat. Hang it up to air dry. In order for everyone to get along on narrow pathways, most public land agencies require that dogs be kept on a leash.
Some areas now ban dogs from using trails.
This is due to past problems which arose from off-leash activities. Check with the rangers when planning your adventure to be sure that dogs are permitted on your favorite trials. Stepping off the trial may cause them to suffer an injury. Most hoof- stock can be spooked by dogs. If you meet a horse-packer, the courteous response is to yield by stepping off the trial with your leashed dog and allowing them to pass.