Best tar and heavy grease remover CITROL ??

My son decided he wanted to do a review on Citrol

Citrol 1 Gallon https://amzn.to/2Qv0LQt

Citrol 1 Can https://amzn.to/2Qv0XPH

Citrol 3 pck https://amzn.to/2QnXv9g
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