Sometimes, you just need to remove the existing residents. Instead of squishing them (which can release eggs or attract ants), invest in a vacuum with a hose attachment. Suck them up, then immediately empty the canister outside. Or, for a classier option, use a glass and a piece of stiff paper to catch and release—preferably in the garden, not the neighbor’s yard.
Fun fact: Some cultures consider killing a spider in the home to bring bad luck. In Russia, it’s said to bring rain; in African folklore, it’s a sign of a coming visitor. So if you’re superstitious, just carry them out with dignity.