Spiders are generally not equipped to survive inside a washing machine. Washing machines are designed to agitate and soak clothes in water, which can be fatal for small creatures like spiders. When the machine is in use, spiders can get caught in the moving parts, subjected to rapid changes in water temperature, and ultimately drowned.
However, it's essential to remember that spiders can find their way into various places in our homes, including laundry rooms or baskets. Before loading clothes into the washing machine, it's a good idea to give them a quick check to ensure there are no spiders or other small creatures hiding among the garments.
If you want to be environmentally conscious and avoid harming spiders or other insects, you can simply relocate them outdoors using a cup and a piece of paper or a spider catcher tool rather than relying on the washing machine. Always practice humane methods to deal with any unwanted pests you might encounter in your home.