Ordinary household cleaner takes grease off a surface. It does not reliably kill what is living on it, and in a kennel, a cattery or a house that has just had a bout of something going round, that difference is the whole problem. What sits here is the disinfectant reached for when the stakes are high, chosen by governments during outbreaks rather than kept under the sink for the kitchen floor.

It comes two ways, and the choice is about accuracy rather than strength. Powder in 1kg, 5kg and 10kg suits regular volume work, where you are mixing to a known dilution in a known bucket. The 5g tablets, fifty to a pack, take the measuring out of it: one tablet, one measured volume of water, no scales and no guesswork at the end of a long shift when guesswork is exactly what happens.

• Tested against more than 500 strains of virus, bacteria and fungi
• Named strains include Salmonella, Campylobacter and Avian Influenza
• Selected by governments for emergency disease-control programmes
• Powder in 1kg, 5kg and 10kg
• Tablets in 5g singles, fifty to a pack
• For surfaces and equipment rather than on animals
• Used in veterinary hospitals and by livestock producers

This is a disinfectant, not a supplement. Mix to the dilution on the pack, allow the contact time it asks for, and keep pets off treated surfaces until dry. Our records also disagree on colour, listing yellow where the manufacturer describes pink, so we quote neither.

Who it's for: Breeders, kennels, catteries, rescues and multi-pet households needing proper biosecurity rather than a stronger-smelling floor cleaner.