Do the sleeping quarters, bathrooms and equipment at a camp become impure if participants came into contact with dog filth in the field, and how should one deal with doubts?

Summary

If the substance of dog filth is clearly visible through its traces or form, it must be washed seven times, once with earth. If there is no evidence of the impure substance, the default ruling is that the item is pure, based on the maxims that certainty is not removed by doubt and that the original state remains. The fatwa advises avoiding obsessive doubt, as it is a whisper of Satan that complicates life.

Written in our own words from the original fatwa — check the source before acting on it.