A pest control system (300; 400) for controlling cellulose-consuming pests in a pre-determined location, the pest control system comprising: (i) a main body having a plurality of spaced blades meeting at a lowermost point and defining a sharp bottom point, defining an essentially cylindrical area, adapted to be placed into the ground, and having a ground-level surface; (ii) a portway extending vertically along the side of the cylindrical inner area of said main body, adapted to allow continuing access to a lower portion of said main body; (iii) at least one cellulose-food module (313; 314; 315) fitted in the inner area of said main body, and having a central essentially cylindrical void and a peripheral essentially cylindrical void; (iv) a bottom vent shaft section having a vent shaft adapted to allow vertical distribution of gases and liquids and having a flange adapted to facilitate removal and reinstallation of said cellulose-food module (313; 314; 315); (v) at least one vent-shaft extension having a vent shaft adapted to coaxially join the vent shaft originating from said bottom vent shaft section, forming a longer vent shaft, and having a perforated flange to allow vertical distribution of gases and liquids; and (vi) a locking top (316; 416) adapted to be removably attached to said main body at said ground-level surface; where said at least one cellulose-food module (313; 314; 315) is supported by the flanges of said bottom vent shaft section and said vent-shaft extension, gases and liquids are distributed vertically within said main body by said vent shafts, said cellulose-food module (313, 314, 315) can be installed, removed, and re-installed, and monitoring of said system can be performed through said portway. (i) a main body having a plurality of spaced blades meeting at a lowermost point and defining a sharp bottom point, defining an essentially cylindrical area, adapted to be placed into the ground, and having a ground-level surface; (ii) a portway extending vertically along the side of the cylindrical inner area of said main body, adapted to allow continuing access to a lower portion of said main body; (iii) at least one cellulose-food module (313; 314; 315) fitted in the inner area of said main body, and having a central essentially cylindrical void and a peripheral essentially cylindrical void; (iv) a bottom vent shaft section having a vent shaft adapted to allow vertical distribution of gases and liquids and having a flange adapted to facilitate removal and reinstallation of said cellulose-food module (313; 314; 315); (v) at least one vent-shaft extension having a vent shaft adapted to coaxially join the vent shaft originating from said bottom vent shaft section, forming a longer vent shaft, and having a perforated flange to allow vertical distribution of gases and liquids; and (vi) a locking top (316; 416) adapted to be removably attached to said main body at said ground-level surface; where said at least one cellulose-food module (313; 314; 315) is supported by the flanges of said bottom vent shaft section and said vent-shaft extension, gases and liquids are distributed vertically within said main body by said vent shafts, said cellulose-food module (313, 314, 315) can be installed, removed, and re-installed, and monitoring of said system can be performed through said portway.