Keep threatening dogs away with the dog repeller. Produces a discomforting but not harmful, high frequency sound, audible to dogs but no humans. SImply point at the dog and press the button.
# Dimensions: 3 3/4" x 2 3/16" x 7/8"
# Weight: 3.5 oz w/9-volt battery (not included)
# Frequency Range: 20,000Hz - 25,000Hz
# 135db
# Effective Range: Within 20 feet
# Also useful for training dogs!