LOWELL, Mich. (WOOD) — Days after the company that runs the Lowell biodigester was found to be in compliance, it has been cited for odor again.

Lowell Energy AD, the company that runs the waste-to-energy plant, will have seven days to get the odor under control or it must shut down.

After a number of attempts to cure the problem and a Nov. 1 deadline to fix the smell, it appeared the stink had finally stopped but on Tuesday the company was cited again. The company added a carbon filter system and duct work to stop the odor, which was described as a cross between raw sewage and animal carcasses.