Cockroaches are covered under our warranty in our general pest spray for 6 month this covers a wide range of the main larger species such as American, Australian, Oriental, Smokey brown and Banded brown. We use a highly residual odorless chemical under your sub floor and a very effective dust for all of your cracks and crevices roof void and retaining walls to smoke them out. the cost of our general pest spray based on a an average three bedroom home is $140 the price will increase or decrease depending on the size of your home.