Woodlice does not spread  disease but  severely cause damage to our valuable furniture’s and wallpaper’s.Basically they live in the ground floors  because they are damp lovers.They will die in the upper roof or upper floors  because they easily dehydrated in the warm environment.These Woodlice can be controlled by pesiticide spray like PRO-ACTIVE C,probably this effective spray does not control the problem totally so avoid damp areas in your house and stop leaking taps. Re-point walls if there are gaps in the pointing as woodlice are well known for living in old garden walls. If you are really serious, you may want to check your gutters as, debris in gutters provides good food and harbourage for the wood louse.