Voting rules: Choose the stain you think is the most difficult!
This is a community-based ranking of the most difficult stain to remove. We do our best to provide fair voting, but it is not intended to be exhaustive. So if you notice something or stain is missing, feel free to help improve the ranking!
A participant may cast an up or down vote for each stain once every 24 hours. The rank of each stain is then calculated from the weighted sum of all up and down votes.