Which statement regarding aquathermia pads is true?

Aquathermia pads are designed to provide moist heat therapy and are typically used with a cover to help maintain an appropriate temperature, avoid burns, and contain the moisture. The use of a cover enhances patient comfort and safety by preventing direct contact between the pad and the skin, which could lead to burns or other injuries due to overheating.

In contrast, the other statements do not accurately reflect the proper use of aquathermia pads. They are specifically meant for moist heat rather than dry heat, and electrical safety precautions are essential when using any electric device to prevent hazards. While securing the pads may be necessary, pins are not a standard practice, and alternative methods or materials are often preferred to ensure that the pads remain in place without compromising safety or comfort.