i have an established groundhog problem. the one known hole comes up in my fenced-in vegetable garden. i have not located another hole, but there is lots of groundhog sightings around my shed. unfortunately i can not see if a hole is there. the shed is about 200 feet from the vegetable garden. if i put a giant bomb in the garden opening, will it reach the shed? and if the gas escapes the shed hole, do i have to worry about neighbors? i have trapped 2 so far this year using apples as bait , but i know there are many more. and they will wipe out my vegetable garden, again!!! what should i do!!!