Jeyes Fluid 
This outdoor cleaner and disinfectant is a tried and trusted multipurpose cleaner. This is suitable for a wide range of jobs around the farm and the home - from unblocking drains to cleaning farm and gardening tools and water butts. It is powerful enough to kill 99.9% of germs including avian flu - making it perfect for disinfecting bird housing and feeders. Jeyes Fluid is effective on all hard outdoor surfaces - perfect for cleaning animal housing, calving areas or disinfecting farm buildings. This is a concentrated product, always follow dilution instructions.