Question: Is it permissible to kill spiders in one's home?

Answer: There are two aspects to consider: on the one hand, a spider made a web at the opening of the cave of Thawr for the protection of Nabi (Sallallaahu Alayhi Wasallam) and has thus become worthy of honour and on the other hand,  Ali (Radiyallahu Anhu) said:  “Wipe  spider webs from your houses, for leaving them in the house leads to   poverty.” 

Keep the above in mind, household spiders who build their webs in corners of our homes are not normally dangerous, should not be killed intentionally.  Remove them from the home by sweeping them out or catching them in something like boxes and throwing them out. 

It should, however, also be noted that there are some dangerous species of spiders – one is allowed to kill these types of spiders.

AND ALLAH KNOWS BEST