Use Jeye's Fluid by all means it will kill the moss. Your house will smell like a urinal for the next six months at least. Mine smelt for a whole year when I used Jeye's to kill the moss on my drive.
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local