PetSafe Dog Fences are the most versatile underground dog fences available and are very easy to use and install.

The PetSafe Comfort Fit Dog Fence is Safe and Effective for all pets 8 pounds and up. Features the PetSafe Comfort Fit Receiver with One Level of Correction. Perfect for any yard up to 10 Acres. The best, most advanced dog fence on the market today.

PetSafe's newest offering is the Comfort Fit Standard Dog Containment System by PetSafe. With an all new PetSafe transmitter and state of the art Comfort Fit single level receiver collar, this is one of the best electronic pet containment fences ever built. The Comfort Fit Dog Containment System by PetSafe features the QuickFit buckle and provides a quick release and a perfect fit every time. Includes a durable, 100% waterproof Receiver Collar. PetSafe is the world’s Best Selling Pet Containment System and includes a Lifetime Limited Warranty. Safe and Effective for dogs from 20 to 70 pounds. The Comfort Fit Dog Containment System by PetSafe works by delivering mild Static Correction through two Contact Points that touch your dog’s neck. With this Comfort Fit Dog Containment System you can contain dogs of all sizes within the same fence. You may add as many receivers for dogs or cats as necessary as long as they are made by PetSafe. One additional receiver is required for each dog you wish to contain. Once your dog has learned the boundary of the yard, it will only receive a static correction when nearing the boundary. The initial 500 feet of 20 gauge underground wire allow you to cover approximately 1/4 acres of land, but with additional boundary wire Kits the fence can expand to cover up to 10 acres. The Comfort Fit Dog Containment System by PetSafe allows you to install the system in almost any size or shape.

Exclusive Features:

• QuickFit Buckle: Provides a quick release and a perfect fit every time.
• Testing Tool: Allows you to test the proper operation of the Receiver
• Low Battery Indicator Light: - Lets you know when the batteries need replacing. The #1 cause of pets leaving a containment system are weak or dead batteries
• ASIC Microchip: A chip the size of a match head with 3000+ filters to prevent unwanted correction.
• Small & Lightweight: The Comfort Fit Receiver is one of the smallest and lightest receiver available anywhere - bar none!
• Waterproof Receiver: The Comfort Fit Receiver is completely Waterproof
• Omni-Directional Signal: A must for all containment systems as it eliminates all dead signal areas. This prevents your pet from finding a way out. A must for any system.
• Operates Multiple Collars: This system was designed to operate as many collars and contain as many dogs as you desire.
• Adjustable Correction Zone: Allowing you to set the correction field from a few feet all the way up to 20 feet.
• Yard Size: Ideal for any size yard up to 10 acres
• Wire Break Alarm: Audio break alarm and light on the transmitter warns you if the wire has been broken
• Digitally Coded Signal: Prevents false activation. Only our transmitter can activate the receiver. Other brands' receivers can be activated by Televisions, cordless phones, garage door openers, etc. We use filters and coded signals to prevent this. Don't trust your pet's safety to anything but a PetSafe™ Containment System
• Receiver Fail-Safe: If your pet gets trapped in the correction zone, the receiver will shut down after 20 seconds to prevent over correction
• Transmitter cover: Conceals range adjustment control to prevent tampering and accidental increases or decreases in signal
• Government Ratings: The only UL and CE rated system on the market
• Instructions: Easy-to-follow manual and DVD covering installation and pet training

If your coverage area is larger than 1/3 acre, see chart below to calculate the amount of additional wire you would require.

Your "Underground Fence" does Not have to be installed underground! Save all the digging and cut your installation time in half! All you need is one box of Fence Staples (SS-100) for every 500 feet of wire you order for above ground installation.

Use this guide to determine how much wire you need to enclose your yard. These figures are estimates, based on typical layouts. You may need more wire if you're doing interior loops to boundary off gardens, swimming pools or other protected areas. We will provide you wire in 500 foot increments on 500 or 1,000 foot spools.

For larger areas, use the following formula: Multiply the total acreage by 43,560- i.e. 10 acres x 43,560 = 435,600

Find the square root of the above number - square root of 435,600 = 660 (this is the length of each side of a 10 acre area that is square in shape. Even if your area is not square, if you multiply this number by four, this is the approximate length of the four sides of a 10 acre area.)

Therefore, one would need approximately 2,640 feet of wire to enclose the perimeter of a 10 acre area. You will need additional wire to run from the transmitter to the perimeter and/or for any interior loops, etc.