This study demonstrated that essential oil fogging
improves hygiene standards in broiler houses. The use
of essential oils before stocking reduced bacterial counts
in the air and on wall and drinker surfaces in experimental
rooms and reduced the populations of mannitolpositive
staphylococci in the room treated with peppermint
oil solution. Oil treatment had no significant
effect on litter hygiene (Tables 1 to 3). During broiler
rearing, the mean total counts of mesophilic bacteria,
Enterobacteriaceae, and staphylococci were also highest
in the control group (Tables 4 to 6).