Patchy regulations, which may leave conjugates in the weed supply, are how safe is your weed?

Pesticides, mold, bacterium, solvent residues and heavy metals like arsenic can find their way in cannabis products from the soil, so state regulators are looking to keep them out. There are over 600 contaminants that are regulated across 30 states that legalized cannabis at that time. Legal cannabis producers say they think over time, the safer, regulated marijuana brands will win out.