Low frequency mole repellers; high frequency mole repellers; low frequency vermin repellers; high frequency vermin repellers; low frequency birds repellers; high frequency birds repellers; ultrasonic mole repellers; ultrasonic vermin repellers; ultrasonic sound wave generating mole repellers; ultrasonic sound wave generating vermin repellers; ultrasonic birds repellers; ultrasonic vibrating mole repellers; ultrasonic vibrating vermin repellers; ultrasonic vibrating birds repellers.