Irritant reactions are most likely to occur on thinly haired areas. The most commonly incriminated irritants include soaps, detergents, disinfectants, weed and insecticidal sprays, flea collars, fertilizers, and carpet cleaners or fresheners. | Irritant reactions are most likely to occur on thinly haired areas. The most commonly incriminated irritants include soaps, detergents, disinfectants, weed and insecticidal sprays, flea collars, fertilizers, and carpet cleaners or fresheners. |