When should you be alarmed?
Although most people consider spiders to be unpleasant, it is beneficial to have a small amount of spiders in the house. Most spiders feed on pests, do not transmit diseases to humans, and generally tend to flee when confronted by humans. They are thus a natural and effective insect prevention method!
However, if you notice spiders on the ceiling, on the walls or near baseboards (especially during the day), you notice an increase in spider webs or silk cocoons, it is essential to communicate with an experienced exterminator.