While our jets are self cleaning, rarely clog or stop spinning it is necessary to regularly remove and check the jets for any grit or oils on the rear of the jet insert or thread. If this isn’t done, they can be hard to turn on or off and to remove. To get a better grip on the jet face try using gloves or a special grip cloth. If they are really stuck you may have to do this when the spa is empty. Once removed wash out the housing and use an old toothbrush to get any grit out from the thread.