Hunters taking to the woods, farmers harvesting and many people taking walks through the woods or along county roads should be alert for evidence of methamphetamine labs or marijuana growing operations.

This is the time of year marijuana growers will begin to harvest their “crop,” reminds the Indiana State Police.

Farmers working in the fields as well as hunters and hikers are encouraged to be alert for marijuana plots or singular plants. This time of year marijuana plants can still be green or may be beginning to turn yellow. A mature plant can be as tall as 12 feet and will always have an odd number of serrated leaves.

Farmers, hunters and hikers should also be alert for evidence of methamphetamine operations while engaged in these fall activities.

Meth cooks will often discard “trash,” used in manufacturing meth, along rural roadways. The various chemicals used in cooking meth are very volatile and could cause an explosion, fire or severe burns if touched. To avoid serious injury, citizens should keep in mind the points listed below.

Meth cooks use a variety of containers to manufacture their product. A popular container is the one and a-half gallon gas can. These cans appear to be new and may be found along the roadside by unknowing people who believe that they have found a new gas can and end up with a working meth lab.

Other items to be aware of include battery casings, Ziploc style bags, empty blister packs and pop bottles, jars and other containers that may hold a granular material.

The containers may or may not have a tube extending out of the top depending on whether it is a hydrochloric (HCL) gas generator or a one-pot reaction, both are extremely hazardous.

Individuals are cautioned to be aware of any type of cylinder that has a modified valve, found in an odd place such as the middle of a field, a ditch line or wooded area. The valve will be modified in some way and have a bright blue color. These cylinders are used to store or transport anhydrous ammonia that is an extremely dangerous gas when direct contact or inhalation occurs.

Contact the ISP at (765) 567-2125 or (800) 382-7537 if marijuana plants or meth “trash” is located or with information concerning such operations. Callers can remain anonymous.