According to one embodiment, a container for removing antimicrobials from an antimicrobial composition includes a container body having an exterior and an interior. The interior is at least partially filled with carbon granules configured to remove a portion of the antimicrobials in the antimicrobial composition. The interior is further filled with a liquid to at least a level that completely submerges each of the carbon granules. The container further includes an agitator configured to agitate at least a portion of the carbon granules. The container further includes a drain and a drainage valve. The location of the drainage valve is configured to prevent the drainage valve from lowering a current level of the liquid below the level that completely submerges each of the carbon granules.