I want to lay to rest some of the rumors about red cedar bedding and bedding in general. Is red cedar bedding toxic to chickens? Answer: Western red cedar and Eastern white cedar have large concentrations of Plicatic acid which when breathed in can cause asthma in all animals. Most woods contain Plicatic acid, cedars more so than others, but pine also has it. Pine also has abietic acids which also causes asthma and lung disease. Eastern red cedar on the otherhand is not a cedar, it is a juniper and contains less plicatic acid than true cedars. The scent of the cedar is not what is toxic to your animals...it is the hydrocarbon acids that are admitted into the air as the bedding breaks down. Good ventilation is the answer in keeping your animals safe from the hydrocarbons being admitted from their bedding material. Don't avoid cedar beddings for fear it will harm you chickens. When mixed into other bedding material and with good ventilation it is very useful in mite control and keeping the coop smelling clean.