A lot of stores have little glue traps that work great. I would try using these first before any sprays or chemicals especially if you have pets or children.
Eight Legged Freaks is one.
Orb weavers cut down the number of insects like flies by a huge amount. They keep the balance of insect/spiders in check, like most spiders. If there were no spiders, flies would overrun the place, even though birds etc. would still eat them, spiders are highly important
Can the garage floor mats help with the condensation and garage floors
Someone would typically use a garage lock to keep their garage locked. The intended purpose of doing this is to keep unwanted people from entering the garage.
garage
They keep still
To keep the mice and rats under control. Otherwise we would be overrun with them.
There's no evidence that sugar gum trees keep spiders away. Several oils, such as tea tree and citrus, may be able to repel spiders.
Close the door.
no
no
Spiders do not like the smell of peppermint, so yes it does help keep them away.