Yeah. Regardless of whether these dirt vibrators are battery or solar powered, they just do not work. The depressing thing is that these devices are sold by reputable chains like Lowe's, and even endorsed by the guys at This Old House.
Had a horrible mole problem at a former property, and the only solution was the hiring of a liscenced pest control service that specialized in mole removal. The problem is solved by eliminating the mole's food source (normally grubs), via the application of relatively expensive yard and plant treatments. Again, the sonic pulse sticks are simply ineffective.