Mix equal parts white vinegar and water in a spray bottle and use it to directly spray any spiders you see. Vinegar contains acetic acid which burns the spider upon contact. Vacuum. To kill one or just a few spiders efficiently, use a vacuum cleaner.
I have two new rescue dogs so I no longer use insect traps but they are great. I got them at Walmart. You get 4 in a package and they are just a glue on thick papery substance. I just laid mine flat on the floor by the front door where the dusk to dawn light was shining all night long and the spiders were coming out at night. I was shocked how many I caught in a week. I don't put them down anymore because it would be painful for a dog or cat to get stuck on one, it might pull off a layer of skin on their sensitive noses. If you have a place where no kids or pets are this is a good deal. Less than 4 dollars for 4 traps. They are meant to be "tented" up when in use but I just put mine flat on the floor. You will catch MORE than just spiders.
Most spiders are beneficial, eating unwanted bugs/pests. So I definitely wouldn’t use harsh chemicals.
smash them. I hate spiders
Spiders don't like peppermint oil or vinegar, so use a combination of the two against them. Spray windowsills and entryways with a solution of 1/2 cup white vinegar, 1 1/2 cups water, and ten drops of peppermint essential oil. (Eucalyptus oil purportedly works, too, but I find peppermint a more pleasant scent.) If you don't mind using a chemical, I use Ortho Home Defense in my basement because I can't stand bugs in the house! This product will kill bugs for at least 6 months, even after it dries. But, be sure not to spray the floor where your pets walk, as it will get into their system. Only spray where bugs walk, like the walls or window wells.
Here is a site that may help:
Hi Dennis - We use this spray in conjunction with our swiffer and in addition to be a great duster spray, it helps to keep spiders and other buggies at a minimum. Hope this helps! Hugs, Holly
PS - We have a FREE eBook with recipes for all of my homemade and all-natural cleaners. You can download it here --> https://pinkfortitude.com/thank#GreenClean