If you have rat runs all over your 11 acres the you have a huge problem. Pussy footing around with ineffective peanut butt drowning traps, while they might make you feel good about the death of the rat, are not enough to deal with a huge rat infestation. You must eliminate food sources and use...
Get yourself several rat bait stations and place them along walls and buildings. In my experience rat infestations are always bigger than you think, you say you only see 6 pairs of eyes but how many are hiding that you can't see?
Rat Bait Station