Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answer updated 2 months ago

Such clothes need to be washed with water like washing any other Najis clothes, then it will become Taahir. 

Plates and vessels contaminated by dog need to be washed first with soil, then with pure water, but this rule is not for clothes.

Plates or vessels contaminated with pig or dead rat need to washed with water seven times. That is not for clothes.

Wassalam.