It’s a carbon (mix of 3 types) based paint on a thin (.4mm) magnetic sheet with adhesive backing. The paint is sealed with a thin plastic coating. You can trim it to size with scissors, remove the backing paper and stick it to the mains breaker box, obviously safely away from the switches themselves. If you have a PPT Gate, you can stick it onto the surface of The Gate. Use it like PPT mats if you like, with the additional benefit of the adhesive backing. You can also stick pieces anywhere on the equipment chassis (underneath for example). If you are skillful and careful, you can wind strips around cables. All cables will benefit, data, power or signal cables. Also on internet box and wifi modem, and all associated data cables. The closer you can get the tape to the mains power, the better. It would work best on the incoming mains cable outside the house, if that were legal, haha. Please don't ask me how I know.
It’s far more than anti vibration or anti resonance. It is anti-microwave.