How do police investigate a meth lab?

Well meth is a very dangerous substance. If it was manufactured in an apartment you would smell it indefinately. Most meth addicts are rats that only come out at night. They are very dangerous and unstable. Its tough to tell between a crack addict and a meth addict. They look down upon weed usually because it makes them think they arent drug addicts if they blame potheads. If they are smoking weed than most likely they are smoking crack or cocaine. In which can be just as dangerous as a meth addict. The best thing to do is move. If they are dealing meth than they are bringing more meth heads around your home. If someone is dealing meth than they are probably already being investigated by the DEA and ATF. Meth can ruin whole communities. Hopefully they eliminate all the meth in this world. And hopefully your local police arent tied in with the drug trade. Meth is the most profitable drug in the country.