Hi, lockdown boredom kicked in and stripped my Wildcat Whisper moderators 1 in 22 LR and 1 in 17 HMR. They were both filthy. Cleaned with hot soapy water and a toothbrush which removed most of the filth. In future could anyone recommend a solvent or better product to remove the crud. Or is elbow grease the best method. Thanks in advance.