A nurse is reinforcing teaching with a client about the use of transcutaneous electrical nerve stimulation (TENS) to manage chronic pain. Which of the following statements by the client indicates the need for further teaching?

"I hope I don't have to take as many pain pills."

"I wish I didn't have to attach the electrodes to my skin."

"It's unfortunate that I have to be in the hospital for this treatment."

"I need to shave the hair off the skin where I place the electrodes."