Pet Stop of Maryland is your choice for reliable, safe hidden pet fencing systems if you live in Baltimore, Harford or Cecil counties. We have been providing safe and reliable pet fences since 1999. We offer underground pet fencing solutions that make sense for your needs, your pets temperament and your budget. We install American made pet fencing systems that are compatible with most other brands of pet fencing. We offer trade ins and compatible products for Invisible Fence, Pet Safe, Dog Guard and Dog Watch. Installing Invisible Pet Fences / Hidden Pet Fence Training