I tried an ultrasonic pest repeller during a chaotic week when I also had to cancel a flight last minute. The device emits high-frequency sound that pests supposedly avoid. In my case, it reduced activity but didn’t eliminate everything. It works best as a supplement, not a full solution. Same with travel apps—they’re helpful, but when I needed to cancel immediately, calling the airline was the only thing that worked instantly. Funny how pest control gadgets and flight issues both teach you what works and what doesn’t.