You should pull up and remove weeds by hand as and when they appear. If it is a regular problem, you might need to reseal the paving. In extreme cases, the sub layer itself may need to be re-laid. You can use weed killer, however some paving can be discoloured by stronger weed killers.
Llangadog
Llangadog is a village as well as community situated in Carmarthenshire, Wales, which additionally consists of the towns of Bethlehem as well as Capel Gwynfe. A remarkable local landscape feature is Y Garn Goch with two Iron Age hillside fts. Llangadog was the administrative centre of the commote of Perfedd and had a castle, ruined in 1204. Although the borough declined in the Middle Ages, Llangadog maintained its market, which was frequented by drovers right into the 19th century. The railway station on the Heart of Wales Line provides normal train services using Transport for Wales Rail. The station had an exterior siding for accessing the Co-op Wholesale Society creamery, allowing milk trains to access the site. After train accessibility was discontinued in the late 1970s, the creamery continued to operate until 2005, when it closed with the loss of 200 jobs. The site has since been redeveloped as a family pet food factory. An electoral ward with the exact same name exists. This ward stretches past the confines of Llangadog area. The complete ward population taken at the 2011 census was 1,929.