The Thane police has sent notices to bungalow owners at Yeoor Hills asking them to toe the line considering that the area is an eco-sensitive zone. Residents in the area have complained to the authorities often about the loud music from these bungalows. Yeoor Hills, a tourist attraction on the eastern edge of Sanjay Gandhi National Park, has lost its idyllic charm. The calming chirping of birds and the rejuvenating stillness have been shattered by blaring parties, claim residents.