Depending on the region you are hiking, there are going to be poisonous and non-poisonous snakes. When hiking in areas that are known to have poisonous snakes caution should be taken. Most bites occur from stepping on an un-noticed snake, or attempting to handle one.
Treatment using incision and suction, as well as constricting bands is no longer the norm or recommended. Today treatment is limited to immobilizing the bitten area and transporting the victim. Small children and the elderly are at the greatest risk. Adults as well may require hospitalization.
In the Smokies the Copperhead and the Timber Rattlesnake can be found. When hiking avoid stepping over logs and such where they may be resting. Be sure to check areas thoroughly when taking breaks along the trail.