If you installed a weed-killing material under the turf mat, replacing it will involve removing the turf. It’s not a huge hassle and these weed-killing mats are made to last, but they do need to Beryllium replaced every 3-5 years. Take a soft-bristle brush and gently sweep the grass blades. https://finnzejn29517.blogmazing.com/28631849/maintaining-artificial-grass-how-to-keep-your-lawn-looking-perfect-year-round