For example it is safe to listen for an extended period (up to 8 hours) to a dishwasher, hair dryer or vacuum cleaner noise.

But permanent effects to the hair cells can occur after 30 minutes with a sound level at 100 dB or over! This would include things like a gas mower, tractor, leaf blower, rock concert, chainsaw, ambulance, gunshot and fireworks. People often ignore the exposure levels thinking it won't happen to me.

But when they start hearing ear noises or the ringing in the ears on a constant basis, they will begin to worry.
If you do not want to take medication or have surgery this kind of resource will be very helpful. You do not get bad side effects with natural cures for tinnitus. Tinnitus may just be a symptom of a more serious disease. While there is no known cure for tinnitus itself, some specialist may go down to trace the real disease.
There are different factors that may contribute to tinnitus. One is the aging process makes the deterioration of some system of the body, and ear functions is not an exemption.