The windows of buildings are commonly covered, blacked out or frosted to prevent any one seeing inside the structure containing the lab. Sporadic traffic throughout the day and night and unusual trash containing large amounts of empty anti-freeze containers, camping fuel cans, battery parts, stained coffee filters, drain cleaners, and glassware are common attributes of meth labs. Meth is a synthetic amphetamine or stimulant that is produced and sold illegally in pill form, capsules, powder, or chunks. Meth is extremely addictive and can be smoked, snorted, injected, or eaten. Methamphetamine affects the central nervous system and causes the brain to release dopamine, a natural chemical that makes you feel pleasure.
Dopamine is vital to normal brain function.
The presence of meth in the brain causes the brain to release an enzyme that destroys the surplus dopamine in the brain. This enzyme will destroy the brain's ability to produce dopamine over time. The use of meth results in a permanent altering of the brain's natural chemistry. In other words, meth causes brain damage. Each time a meth user uses, they will need to use more meth to achieve the same high that was initially experienced.