how do you seal off entry of driveway and side walks with wire. Does it have to be buried under the concrete? Have a 16 foot wide drive and concrete sidewalk with a three foot strip of grass eighty feet long. Thanks.
It depends on what type of lawn you have. If you do not have to make the mower cross the driveway to go into a zone that is restricted by the driveway, we recommend to place the perimeter wire around the driveway:
http://www.lawnbotts.com/images/lawnbott_installion_plan.jpg
There is therefore no need to cross the driveway.
But, if you have a zone that must be mowed on the other side of the driveway with no other access, the wire will need to be placed over the driveway:
http://www.robomow.com/images/faqs/inner_link_pages/typical1.jpg