GKS JANITORIAL & LANDSCAPING based in Hawaii and cover all areas. GKS JANITORIAL & LANDSCAPING has been working throughout the Hawaii state for many years and has many years of experience working in Landscaping Services. GKS JANITORIAL & LANDSCAPING offer a full Landscaping Services. The Staff have expert Landscaping Services skills, which enable them to carry out minor to major Landscaping Services projects. Formed in 1991 , GKS JANITORIAL & LANDSCAPING specializes in Landscaping Services.