Mooka M200L Air Purifier delivers high quality and clean air at a bargain price: If your newspaper ran the picture I submitted with the column, the dog is my little guy Beni! You can read more about him on mylittlegabby.com, a personal website devoted to my two dogs. Beni is a very special little guy and thriving at 16 years old, having just had a birthday in May. I take the very best care of him I can, which led to my discovering this product.

For many years Beni has had an occasional hacking cough, like he is clearing his throat. I have a fantastic veterinarian who examined him thoroughly and said not to worry about it. In February the cough became much more frequent and I was scared it was some kind of cardiac condition developing. I set a vet appointment immediately and started researching and using Gemini AI to try and track down the cause in the meantime. Gemini suggested some kind of bronchial irritation given his activity level, lack of other symptoms and his ability to walk 6 or 7 miles without strain. Gemini suggested air purifiers to remove airborne irritants and adding humidifiers to my home, given the dry indoor winter air. I immediately bought several Vornado humidifiers and new filters for my big air purifiers, which I had not used in a while. This reversed the problem quickly, and by the time we got to the vet everything was fine and she gave him an excellent bill of health. Still, it was very scary with a much-loved senior dog.

The filters for my now-discontinued purifiers were very expensive, almost as much as a new machine, and the filters need replaced every month, leading to a search for a new air purifier. The Mooka brand is one of the highest rated on Amazon, with uniformly excellent reviews, high praise from pet owners and the reassuring note on the product listing, "most customers keep this item." This led to the Mooka M200L, recommended especially for pet owners but perfect for general use as well. I bought one and have been delighted with it. It is compact and quiet, can cover 2,200 square feet and does a great job keeping the air in my home clean. It has a very attractive night light, an aromatherapy diffuser, the controls are clearly marked and very easy to use, and in regular mode a HEPA filter lasts two months. In Eco mode the filters last four months, and original Mooka filters are only $31.99 per two-pack. Mine will pay for itself very quickly in filter savings. I love the compact size, looks and performance and overall it is one of the most satisfying purchases I've made in a while

The Mooka M200L lists for $89.99 and I paid $71.54 for mine. Currently there is a 25% off checkout coupon, but using the code CLEANAIR1220 on Amazon reduces it to just $49.49, almost 50% off. It's a great way to save on one purifier, or on several for multiple rooms. Highly recommended!

Q. I read your “Backup power and distilling tips for CPAP” column. I travel to the Philippines twice a year with a stopover in Japan, and have a terrible time getting distilled water for my BIPAP machine. Is there a portable travel distiller that is easy to pack and uses 80-240 VAC for power?

—B.L., Sunnyvale, California

A. The H2O 4 X Instant Ion-Distillation Water System is made for travel, does not need power at all and sells for $29.95. The filter cartridge lasts 30 days and makes 3.25 gallons of distilled water. thecpapshop.com

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