Pro Clean Concentrate is basically suitable for all surfaces, including wood. Please note the surface coatings. The less protective layer there is on the wood, the more advisable it is to test on a spot that is not visible. Then you can be sure that you will achieve the best results.
Each wood has grown differently, has a different structure and has been treated differently. Even with oiled surfaces, please test only in invisible areas, because Pro Clean Concentrate dissolves grease.
Wood surfaces can achieve excellent care if you clean the wood and then maintain it with a wood oil.
With Pro Clean Concentrate you generally get many positive cleaning results.