A diesel particulate filter (DPF) can remove the diesel particulate matter from the incomplete combustion exhaust gases of diesel engine vehicles. The regeneration process of DPF is critical since the cost of the DPF/catalytic system for Euro 5/6 Diesel Cars has been calculated as half of the cost of the whole engine of the car. Nowadays, organic based solvents are used for regenerating filters while simultaneously revealing potential toxicity. As a result, there is a need for an innovative and environmentally friendly regenerating process. The studied reagents were citric acid, a deep eutectic solvent (DES) of choline chloride and lactic acid, sodium dodecyl-benzene sulfonate, and sodium hypochlorite. By this novel regenerating method, up to 90% of the organic compounds from diesel filters were removed.