I read somewhere (but can't find it now

) about a DEFRA approved disinfectant that can be diluted and stay fresh for quite a long time in a spray bottle.
Anyone know what it is likely to be?
Would it be sufficient to spray the bottom of wellies before entering the chicken run? Reluctant to use footbath as I can't think of a way of keeping sheep and cats out of it.
Not sure how far to go in terms of bio security, especially seeing that most chickens around here are still out and about. And guessing the dogs and cats could carry the virus back here on their paws anyway. We are surrounded by thousands of pheasants so there is a wonderful viral pool potentially.
Any thoughts?