If you don't have to pay,there is no harm in letting pest control inspect your garden.I live in a council property,I had rats in my loft.Pest control said he needed to inspect my neighbour's loft too.They agreed to this,but when the time came they refused.They had said,in front of the pest control man,that they had seen loads of rats running round on their garden, near the rubbish bags they always have,they were laughing about it.They have learning difficulties,so their house is filthy,back garden overgrown,ivy growing right up the back wall covering 2 windows.I feel the council should order them to have pest control,and do something about the ivy,but they can't because of their disabilities.I think people should co operate,though I know this case is a lot different.