We do not recommend any cleaning to be done. Any appliance over 8 years old are recommended for replacement as there will be significant ageing of internal parts within the appliance. Your oven may still fail after cleaning, and our HomeHelper will not be responsible for any breakdown as this issue is related to ageing of the appliance.
My oven has not been cleaned for the last 9 years. Can your HomeHelper still carry out her job as per normal?