Are you kidding me?

I am reading 'Seven Steps to Nighttime Dryness: A Practical Guide for Parents of Children with Bedwetting", by Renee Mercer, CPNP.

There are diagrams explaining how the body works. There is some practical advice, like don't give your child milk at night, because the tryptophan causes your child to sleep sounder making it harder for him to wake up to urinate.

But the book is a 117-page ad for the author's bedwetting alarms. The alarms recommended range from $70 - $130. These are not alarm clocks that wake you up a couple times at night to remind the child to void. These are devices that can be either built into special underwear or attached to regular underwear. Or they can be a pad under the child that senses when wet. They have an alarm that sounds when the child wets. The idea is to condition the child (like Pavlov's dogs) to awaken before wetting.

Is it really a big ad for the author's bedwetting alarms? And I quote: "Because bedwetting alarms offer the most effective permanent treatment for bedwetting, the rest of this book will discuss their proper use." This statement comes on page 35 of a 117 page book. So, children through the ages had no other alternatives? 

Surely, there has to be another answer.