I have decided that I need to do a complete overhaul of my backyard lawn, which is in a weird kidney shape, that has pretty much deteriorated from a combination of drought-like conditions last year and our dogs peeing and pooping all over it. The question I have is how would I handle cutting out the grass with a sod cutter when there's a sprinkler system buried beneath the ground? Another question is what type of grass is best suited to my area and to dogs? We have a miniature dachshund and a miniature schnauzer.