Hi everybody. For the second year running the privacy hedge (viburnum tinus) outside the window of my front room has been heavily attacked by Viburnum beetle. The plant is large ( 5ftx 5x3)and there is some healthy looking new growth, but despite my spending a small fortune on sprays (mostly Provado Ultimate bug killer), the general appearence of the plant is moth eaten and the smell as I go in and out of the front door is atrocious. Any helpful advice would be appreciated. Thanks in advance.