Perhaps the most humane options available are pest repellers like the uHome that emit powerful, penetrating ultrasonic waves. Instead of killing insects and rodents, such devices simply drive them away. You don’t hear anything at all, but for spiders, roaches, ants, mice, and more, the ultra-high-pitched sound makes your home a decidedly inhospitable place. It's important to note that certain beloved household pets (cats, hamsters, guinea pigs) may be sensitive to the frequency output by uHome and similar units, but dogs don't mind. Available on Amazon; $19.95.