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The Post’s Maggie Fazeli Fard offers up helpful tips for how to spot a meth lab (and what to do if you find yourself inside one). It starts off with a delightfully understated note: “The usual giveaway is a fire or explosion caused by the manufacturing process.”

Other tips include:

— Unusually large amounts of cold medicine that lists ephedrine or pseudoephedrine as ingredients.

— Unusually large number of jars containing clear liquid with a white or red colored solid on the bottom, iodine, red phosphorus, fine red or purple powder, or dark shiny metallic purple crystals.

— Coffee filters containing a white pasty substance, a dark red sludge, or small amounts of shiny white crystals.

— Bottles labeled as containing sulfuric, muriatic or hydrochloric acid, or containers with rubber tubing attached.

— Glass cookware or frying pans with a powdery residue.

— Unusually large amount of camp fuel, paint thinner, acetone, starter fluid, Lye, drain cleaners, or lithium batteries.

— Soft silver or gray metallic ribbon stored in oil or kerosene.

Still, we’re pretty sure that if one finds oneself somewhere that has “unusually large” amounts (or any amounts) of this stuff, then one is probably already aware it’s a meth lab.

Photo via Drug Enforcement Administration