Virkon S Disinfectant Tablets are a broad spectrum disinfectant that works against viral, bacterial and fungal disease causing organisms. It has been recommended and used by government agencies across the world as it is so good at what it does.DEFRA approved broad spectrum virucidal disinfectant. Highly versatile - surface, equipment, water and aerial disinfection. Ideal for stable block, horse box, tack and equipment cleaning and disinfection. F and M at 1:1300, SVD at 1:200, Fowl Pest at 1:280, General orders at 1:120.