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

The PetSafe PIG-10777 Stubborn Dog Radio Fence is Safe and Effective for all pets 30 pounds and up. Features the PetSafe Stubborn Dog Receiver - the most powerful receiver available anywhere - with Five Levels of Adjustable Correction Plus Vibration. Perfect for any yard up to 10 Acres. The best, most advanced dog fence on the market today.

The PetSafe Stubborn Dog Radio Fence comes with the Programmable Vibrating Stubborn Dog Receiver. This receiver is excellent for that stubborn, big or hard to train dog. If your pet weighs over 30 pounds and is very stubborn this is the one for you. This may be needed on stubborn tough breeds such as Akita, Chow, Huskie, and occasionally, Labs and German Shepherds.

The system can be expanded to 10 acres by adding additional wire and flags. It uses the patented ASICS Chip, the only microprocessor in the industry built specifically for pet fences by PetSafe. It has 3,000 filters to eliminate any possibility of interference from outside sources.

Exclusive Features:

• Five Levels of Programmable Correction The most powerful receiver on the market
• Vibration feature in the warning tone as an additional deterrent
• Level one is warning only with vibration - ideal for initial training or very timid pets
• Levels two thru four with vibration are for easy or average to train pets
• Level five with vibration is for very hard to train or stubborn pets
• Progressive Correction - if your pet attempts to leave the yard, the receiver will automatically increase the correction level until he returns
• Anti Linger so the dog cannot stay in the warning zone and run down the battery
• Levels are easily changed with a push of a button on the receiver
• Uses a common 9 volt battery providing a average battery life of 6-9 months.
• Ideal for extremely hard to train dogs or dogs that are consistently breaking through the boundary and need a stronger receiver

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.