How much does it cost to decontaminate a home that was used as a meth lab? Here’s a study on the direct costs of meth abuse in Multnomah County in Oregon. The study by the Research Firm EcoNorthwest reveals that cost of meth abuse in the county is more than all of the income taxes paid by the residents of that county. In 2004, they estimated that the cost of the cleanup for the county was $102.3 million dollars. Read the study.