I had one of these worked great and inexpensive at Wally World till it broke. Replacement was a different manufacturer and with Simple Green regular strength (didn't know about the harsh properties) the plastic cracked. Got a replacement from the seller and that one cracked also. Purchased the Park Tool and with the Park Tool cleaning fluid it worked great. Park Tool informed me about the full strength Simple Green and now I use Simple Green for bicycles purchased from Home Depot. Chain never looked so clean but now it does.