A system for absorbing fluid material on trocar surfaces is provided. The system comprises a trocar and a cleaning instrument having at least two ends with an absorbent area at one end of the cleaning instrument. The absorbent area has a first outer diameter at a first part of the absorbent area and a second smaller outer diameter at a second part of the absorbent area, such that at least a portion of the absorbent area has an outer diameter larger than an inner diameter of the trocar. When the absorbent area is inserted inside the trocar, the absorbent area comes into contact with an inner wall of the trocar and absorbs fluid along the inner wall. Furthermore, when a part of the absorbent area is passed through a tip at the distal end of the trocar, the absorbent area absorbs fluid along an outer wall of the tip.