Works well. Took a bit for the dog to catch on, but she's trained now and obeys the boundary. I did opt to purchase separate 14AWG dog wire to bury. Now the dog has the freedom to run around the yard. CAUTION: unforeseen side effect is the dog barks at the neighbors now and I have to chase her around the yard to bring her back indoors :-)Was going to buy the higher end with rechargeable collar but glad I got this one.