Human hearing is affected when noise levels reach or exceed 85 decibels for more than eight hours. An idling tractor or a barn cleaner are two pieces of farm equipment that generate noise at this level.

Protect yourself and your employees by supplying ear plugs. Both disposable and reusable ear plugs are available from Gempler's catalog. Prices range from 50 cents to $5 per pair.To order, call 800-382-8473.