Those landlords who are doing such unlawful acts of encouraging overcrowding, prostitution and drug trafficking should be charged with the highest sentences because they are the ones who are the actual mastermind behind the entire operation. I am certain they are the ones who reap the most benefits too. Another similar situation is occurring in self-storage centres whereby tenants are turning their units into residence even though it is clearly stated in the lease contract that such acts are prohibited by law. Nonetheless, it is not easy to monitor every movement of the tenants because privacy issue might arise if we fix CCTV inside their units.