I need a Wireless dog fence to keep a couple of labs from wandering off. Need it to be as large an area as possible. Any brand recommendations? Can I put two transmitters up to get a larger range/take out the 'shadow' of a barn? Any ideas would be appreciated.
I used to have a labrescuenc wireless system. If I remember right each transmitter did a 300 ft radius. It worked good until I had more dogs than I had collars for. Then the ones without collars would tempt the others to run off. These were labs also. There were different strengths to set it at. Full strength for labs. All in all it worked good. I now have a 7 wire high tensile fenced in area in my yard/timber. Definitely don't have to worry about them now.
I highly recommend PetSafe wireless fence. However, you can check some other companies as well before buying one. Check on oodlelife.com You can find some excellent tips regarding dog fences and dog products in general.
The most important thing is not to save some money and buy a cheap item that won't last long. Consider buying something made of high quality materials. However, I am not really into wireless dog fences since the noise of the collar might not be the nices one. And even if I recommended one already, you still have to know that it was used only for a short period. It's up to you!