Chessington.....the little wafers that you get to place in the roof of the mouth work for a few hours.
I have seen advertised a device for the wrist that allows three snores then administers a little shock but I have no idea if it works.
I may try it sometime depending on the severity of the shock.....I can be violent if wakened suddenly.....and should I find a partner a black eye would be a bad start.
Weight loss can help, and not drinking alcohol in the evening, and also the sufferer of the noise can use earplugs and take a sleeping pill. But if the snoring is causing sleep apnaea then the snorer needs oxygen at night.