How should mughallazah and mutawassitah impurities be cleansed for Perlis Halal certification applications?

Summary

In this guideline, mughallazah impurity refers only to a dog's lick and is purified by sertu, which is seven washes with the first using water mixed with clean, impurity-free soil. Other parts of a dog and the entire body of a pig count as mutawassitah, which is simply washed with pure water until the smell and colour of the impurity are gone. Sertu is required only for places or equipment believed to have been licked by a dog, not the whole premises, and equipment made from parts of a pig or dog may not be used to produce halal products.

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