YSK that your dogs should never be taken off the leash when camping or hiking unless they are under the strictest of voice control and you should always pick up their waste.
from /r/YouShouldKnow
YSKでは、キャンプやハイキングの際には、声をかけない限り犬を放してはいけませんし、排泄物は必ず拾ってください。