Block the accesses
Check the condition of window seals, install mosquito nets, and seal cracks in walls or around pipes. It’s like closing the shutters to keep out mosquitoes: simple, but incredibly effective.
Turn off unnecessary outdoor lights
Light attracts insects, which in turn attract… spiders. Reducing this light-dependent food chain can greatly limit nighttime visits.
Tidy up cluttered areas
Piles of cardboard boxes, clothes, or forgotten items are prime hiding places. The less shelter you provide, the less likely they are to remain.