Final answer:
Scientific evidence does not robustly support the effectiveness of ultrasonic sound emitters for controlling bats, which use echolocation for navigation and might adapt to the presence of such emitters. Bats' sophisticated navigation system may experience difficulties in indoor environments, potentially explaining issues with finding exits when they enter human dwellings.
Step-by-step explanation:
The question is focused on whether ultrasound devices marketed for bat control are effective based on scientific evidence. The short answer is there is no concrete scientific evidence that ultrasonic sound emitters are effective in controlling or repelling bats. Bats use echolocation to navigate and catch prey, sending out ultrasound waves and listening for the echoes that return, a process that allows them to create a 'picture' of their environment.
Regarding rodent and insect control, controlled tests have indicated that these animals may initially react to ultrasonic sound emitters but tend to adapt quickly, perceiving them as harmless. Therefore, considering bats' echolocation abilities are more sophisticated, it's reasonable to infer that bats could similarly adapt to ultrasonic devices, rendering them ineffective as a deterrent over time.
To understand why bats might get confused indoors, such as difficulty finding an open door to exit a house, we must consider how they detect objects using echolocation. If a bat can detect echoes 1.00 ms apart, it determines a minimum distance between objects. Complex indoor environments could disrupt the bat's echolocation, making it challenging for them to find exits.