As well as impacting less on your garden, burying the wire for an invisible dog fence will also protect the wire as well as prevent any trip accidents on the surface. But it is also important not to bury it too deeply, otherwise it could interfere with the strength of the signal. Go too deep and you could also disturb other buried lines for your home’s utilities.
Always refer to the user manual of the invisible pet fence you have purchased, but as a rough guide, the typical depth range is somewhere between three and 24 inches.