---
product_id: 430274
title: "Holmes Humidifier Bacteriostat, H1709PDQ-U"
brand: "holmes"
price: "AR$210178"
currency: ARS
in_stock: false
reviews_count: 7
url: https://www.desertcart.com.ar/products/430274-holmes-humidifier-bacteriostat-h1709pdq-u
store_origin: AR
region: Argentina
---

# Up to 4 months filter life extension Controls bacteria & algae growth Simplifies humidifier cleaning Holmes Humidifier Bacteriostat, H1709PDQ-U

**Brand:** holmes
**Price:** AR$210178
**Availability:** ❌ Out of Stock

## Summary

> 💧 Keep your air pure and your filters fresh—effortless protection for your humidifier!

## Quick Answers

- **What is this?** Holmes Humidifier Bacteriostat, H1709PDQ-U by holmes
- **How much does it cost?** AR$210178 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/430274-holmes-humidifier-bacteriostat-h1709pdq-u)

## Best For

- holmes enthusiasts

## Why This Product

- Trusted holmes brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safe & Versatile:** Perfect for all cool mist humidifiers, ensuring healthier air quality.
- • **Trusted by Users:** Thousands rave about longer filter life and odor-free operation.
- • **Effortless Maintenance:** Just add a capful per gallon—cleaning made simple and effective.
- • **Bacteria & Algae Defense:** Keep your humidifier’s water tank and filters fresh and germ-free.
- • **Extend Your Filter Lifespan:** Go weeks without changing wick filters—save time and money!

## Overview

Holmes Humidifier Bacteriostat H1709PDQ-U is a powerful 32-ounce solution designed to inhibit bacteria and algae growth in cool mist humidifiers. By adding a capful per gallon of water, it significantly extends wick filter life—up to 4 months without cleaning—while simplifying maintenance and promoting healthier indoor air. Ideal for professionals seeking hassle-free, effective humidifier care.

## Description

The investment in a cool mist humidifier in hot, arid climates can provide protection from static electricity while improving respiratory functions and soothing eczema and parched houseplants. Despite the numerous positive attributes, using a humidifier may also produce some harmful results. Without proper care, the humidifier becomes the breeding ground for assorted viruses, bacteria, algae, and mold. In other words, the soothing moisture released by humidifier may endanger household members more than heal them in the long run. Luckily, regular humidifier cleaning and filter replacement eliminates the spread of these unwanted elements. To stop bacteria growth in cool mist humidifiers, Holmes Products developed this Bacteriostat solution. The 32-ounce bottle contains various chlorides to effectively kill bacteria and algae. Suited portable and stationary cool mist humidifiers alike, the bacteriostat should not be used for treating warm mist humidifiers. As with all chemical cleaners, read all safety guidelines with care prior to use and keep away from flammables and children. The bottle measures 9.25 by 3.13 by 2.94 inches and weighs 1 pound upon shipping. Label Information Ingredients Dimethylbenzylammonium chlorides 2.25% Dimethylethylbenzylammonium chlorides 2.25% Inert ingredients 95.5% Warnings Keep this product out of the reach of children.

Review: Really works! No growth on my wick filter any more! - Like everyone else I have a Vornada evaporative humidifier that basically uses a wick filter that soaks up water and holds it until the fan on top sucks it and circulates it into the room. Problem is, the wick retains the water so when it's off the water on the wick is prime breeding ground for growth of bacteria mildew and other nasty stuff. I had to change my filter almost weekly!! So I put a capful of this bacteriostat for every gallon of tap water (New York city water: not particularly hard or soft) after filling up my tank. It doesn't have any noticeable smell. But wow, I have now gone about 2 months (that's 8 weeks!!) without having to change my filter and I didn't even clean my tank either just to experiment. No growth or smell nothing nasty in my dehumifier that used to require weekly filter change and clearing. Amazing... I just wanted to see how long I could go without changing/cleaning but I wouldn't recommend not cleaning for two months haha. But it looks like I can go longer...! 3/22/2014 Edit: I am still on my first set of wick filters and although it doesn't smell bad, the top 1/2 inch has now turned a bit brown. So I have gone almost FOUR months without ever cleaning the humidifier or changing the wick. Just simply putting a capful for every gallon of tap water and away I go. W.O.W. I am just flabbergasted at how well this thing works! I used to change my wick EVERY WEEK (5-7 days) with weekly cleanings. I just went 4 months, folks...
Review: An excellent roduct at a bargain price - I followed a recommendation (someone's feedback/review left on the air humidifier I was was interested in) and I have to confess, it is all of what was described. It is plenty of product, it is efficient and the quality / cost ratio is quite high. The product works and your filter's life will definitely be extended (to tell the truth, I have been using one filter for the whole season and it did not go bad yet - no stain or mold, some calcium none of the products similar to this one address but still OK). I would highly recommend to buy it and abandon the product that advertiser themselves as "no mess, just drop in". Adding a cap of this to my water tank is not that cumbersome or an impossible task.

## Features

- Prolongs the life of wick filters
- Simplifies cleaning
- Controls growth of bacteria and algae in water tanks and wick filters
- Please read all label information upon delivery
- Keep away from children

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BRKYU8 |
| Assembly required | No |
| Batteries required | No |
| Customer Reviews | 4.0 4.0 out of 5 stars (336) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2 pounds |
| Item model number | H1709PDQ-U |
| Manufacturer | Holmes |
| Product Dimensions | 0.4 x 8 x 2 inches |
| Warranty Description | N/a. |

## Images

![Holmes Humidifier Bacteriostat, H1709PDQ-U - Image 1](https://m.media-amazon.com/images/I/41zamUJcpDL.jpg)
![Holmes Humidifier Bacteriostat, H1709PDQ-U - Image 2](https://m.media-amazon.com/images/I/81dGevhkB2L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Really works! No growth on my wick filter any more!
*by E***E on January 25, 2014*

Like everyone else I have a Vornada evaporative humidifier that basically uses a wick filter that soaks up water and holds it until the fan on top sucks it and circulates it into the room. Problem is, the wick retains the water so when it's off the water on the wick is prime breeding ground for growth of bacteria mildew and other nasty stuff. I had to change my filter almost weekly!! So I put a capful of this bacteriostat for every gallon of tap water (New York city water: not particularly hard or soft) after filling up my tank. It doesn't have any noticeable smell. But wow, I have now gone about 2 months (that's 8 weeks!!) without having to change my filter and I didn't even clean my tank either just to experiment. No growth or smell nothing nasty in my dehumifier that used to require weekly filter change and clearing. Amazing... I just wanted to see how long I could go without changing/cleaning but I wouldn't recommend not cleaning for two months haha. But it looks like I can go longer...! 3/22/2014 Edit: I am still on my first set of wick filters and although it doesn't smell bad, the top 1/2 inch has now turned a bit brown. So I have gone almost FOUR months without ever cleaning the humidifier or changing the wick. Just simply putting a capful for every gallon of tap water and away I go. W.O.W. I am just flabbergasted at how well this thing works! I used to change my wick EVERY WEEK (5-7 days) with weekly cleanings. I just went 4 months, folks...

### ⭐⭐⭐⭐⭐ An excellent roduct at a bargain price
*by J***7 on February 7, 2016*

I followed a recommendation (someone's feedback/review left on the air humidifier I was was interested in) and I have to confess, it is all of what was described. It is plenty of product, it is efficient and the quality / cost ratio is quite high. The product works and your filter's life will definitely be extended (to tell the truth, I have been using one filter for the whole season and it did not go bad yet - no stain or mold, some calcium none of the products similar to this one address but still OK). I would highly recommend to buy it and abandon the product that advertiser themselves as "no mess, just drop in". Adding a cap of this to my water tank is not that cumbersome or an impossible task.

### ⭐⭐⭐⭐ This stuff works pretty well.
*by N***S on November 27, 2011*

I cant really tell that this product makes my filters last longer. I think it depends on your water and if you are using distilled water (which I dont). It does cut down a lot on mold that turns the water into a green slime, but you will still get mineral deposits forming in your humidifier and filter as this product can do nothing to prevent that. So if you are using fairly soft water to start with, at least you are getting rid of slimy "jelly water"! and only have to worry about a little bit of mineral deposits. If you can afford to use distilled water in your humidifier, plus this stuff, then I can see a big change in the frequency of cleaning and filter changing. That would be the ideal way to go. Using tap water, I do notice that the air smells better. No "musty" smell, the air smells fresh and clean. So, I do recommend this product, but dont expect too much if you have hard water. And you will still need to clean your humidifier regularly depending on the amount of disolved solids in your water.

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-09*