If a method in the book did not work in your house, I would rather know than not.
The best way to reach me is through the channel, where I read what comes in. Tell me which numbered method you used, what you tried it on, and what happened.
Water is different from place to place, and so is the age of a building and the way it was built. Something reliable in Puebla may behave differently somewhere else. Corrections go into the next edition, and the people who send them are the reason it improves. If you already own the book, that next edition reaches you at no further cost.
Order and delivery questions are quickest through Gumroad, which sent your receipt — the receipt email carries a link to your copy that keeps working.
Last updated 18 August 2026 · Abuela Rosa, Puebla, México