How does antiseptic prevent the spread of infection in the kitchen

In the kitchen there are different utensils that can be very dangerous especially if dirty when a disinfectant is added the bacteria is killed rapidly from the utensils. But when you have animals in the kitchene. g dog when antiseptic is used to wash them the bacteria from their fur is killed of. And thus when they touch the things in your kitchen there is a low chance of you ever getting infected