Submitted questions will be posted with my response by the following Tuesday or before.
Submitted comments will be moderated and approved within 24 hours.
Question from B.R.
I want to purchase an outdoor grill for my husbands birthday. Is there anything that would be nontoxic?
The burning of all fuels produce combustion by-products and smoke, which make food taste delicious, but are harmful to breathe. So regardless of which type of barbecue you choose, try not to breathe a lot of smoke.
There are basically two types of grills: gas and charcoal.
My husband and I barbecue over a small, inexpensive, portable charcoal grill. The point for us is to cook over the natural wood flame. We use a simple chimney-type starter rather than toxic lighter fluid, and we burn only natural wood briquets that have not been treated with any chemicals.
I’m not a fan of gas grills. They are more expensive to purchase, they require the purchase of propane gas for fuel, they are large in size, untilizing a lot of metal, which is very polluting to the environment, and in the end, it’s not much different than cooking over a gas stove indoors.
You can read more about healthy barbecuing in my book Home Safe Home on page 309.
Question from S. J.
[This entry was transferred from the Q&A that was created before this blog existed. There are two questions and one answer.]
The company that services my a/c unit told me that our ducts weren’t sealed properly and it caused dust and mold in the attic to get into the ducts.
The recommendation is that we absolutely have to get the ducts cleaned with high pressure hot water and sanitized with a liquid antibiotic.
I have read some information about ducts cleaning that it was ineffective and dangerous.
Do you have any information you can give on this subject? Any safe alternative to what was recommended? And how would it affect our health if we don’t remove the mold from the ducts?
Having the air ducts cleaned in your central air system is a relatively new service that is being promoted as part of central HVAC maintenance. The EPA has addressed this quite thoroughly on their website “Should You Have the Air Ducts in Your Home Cleaned?”. The site includes:
To evaluate whether or not you need to have your air ducts cleaned, first it’s important to understand how the air flows through your system. Air to be cooled or warmed usually enters the system through a large air intake vent, often placed in the central hallway of the home. The first thing that happens is that the air *goes through a filter*. If the system is working properly, little if any dust or mold will ever go into the ducts. If, however, ducts have not been sealed properly, dust and mold can get into the ducts and may need to be removed.
The EPA concludes most homes probably don’t need air duct cleaning and the cleaning may actually worsen indoor air quality.
Before getting your ducts cleaned, I would recommend getting a second and even third opinion. When we first moved to Florida and needed to get an air conditioner, the evaluations of what we needed and its costs were up to $10,000. Ultimately we found we could repair what we had by replacing part of the system for less than $1000 and it’s been working fine since.
As for the health effects of mold that may be present in your home…mold is ubiqutous–there is always a little mold in the air and on many surfaces. Molds can easily enter your home by circulating through doorways, windows, and, yes, HVAC systems. But mold spores in the air can also land on people and animals, who can bring them indoors as well. Mold only becomes a problem when it can proliferate because of excessive moisture. Unless you have leaky pipes, a roof that leaks during a rainstorm or other sources of excess moisture, you probably don’t have a mold problem in your home. For more on the health effects of mold, see
Question from J.G.
I’ve been looking for flannel sheets but noticed that many are imported. Not real clear on this issue, so do I need to be concerned about the type of dye that is used in any imported fabric? Which would mean only made in U.S. cotton or organic would be safe. Thanks for any info.
I’ve been sleeping on flannel sheets for over twenty years and have never noticed an ill effect from the dyes.
If a dye is “colorfast” — that is, that it stays in the fabric without coming out during use or washing, it is staying within the fabric. If, for example, you wore a red shirt, and ended up with red armpits, some of the dye may be absorbed through your skin and into your bloodstream. I am not aware of any reason to be concerned about dyes that are colorfast.
Question from M S-M
I live in Orford Qc where there is a conservation national parc, a very delicate ecosystem. Unfortunately , it is a very beautiful mountain also and a promotor is now on is way of exchanging the land for another to built around 2000 condos and new golf courses. The builders have already constructedfor the many sidewalks and belvedere in the parc with ACQ wood they say, to me it smells like CCA wood. Suppose moment it is ACQ, is it safe for a prolong exposition to wild life and for the drinking water of the community?
I am concerned and I asked the promotor during the BAPE hearings yesterday. He said that it is safe and the park authorities also. I am not conviced, since he is using vinyl a lot in other constructions.
Do you have any comments on the safety of ACQ?
ACQ stands for Alkaline Copper Quat. The main active ingredient is copper, which was the main active ingredient in CCA chromated copper arsenate pressure treatment, which was phased out in 2003. Though the copper remains the same, the other ingredients in ACQ are much less toxic than the chromium and arsenic that were used in CCA.
According to manufacturers’ literature on ACQ, quat acts as a co-biocide, providing additional protection from fungi and insect attack that copper alone would not control. Quats are commonly used in household disinfectants and cleaners, and in swimming pools and spas. Quats are biodegradable in soil.
Recently my husband and I were faced with a decision as to whether or not we would use ACQ treated wood for posts to hold a garden gate. At both Lowe’s and Home Depot, free information on ACQ treated wood was obviously displayed. These are interesting documents. On the one hand they say wear a dust mask when cutting, wear gloves when handling, wash exposed areas thoroughly after handling, wash work clothes separately from other household clothing, do not use where it may come into direct or indirect contact with drinking water or where the preservative ma become a component of food, animal feed, or beehives, and do not use for mulch. On the other hand, use recommendations include hand rails, fence posts and decking, and one brand was the winner of the 2002 EPA Presidential Green Chemistry Award!
We were in a situation where we needed two ten-foot 4×4 posts, which are not sold at either Home Depot or Lowe’s. Here in Florida, the choices were ACQ and cedar. We went to lumberyards and started off saying “We don’t want ACQ because it’s toxic” and lumberyard men would look at us blankly and say “No, it’s not.” We would show them the manufacturers’ flyers from Home Depot and they had never seen them before. They were handling and cutting these boards and posts all day long with no precautions and had no concerns whatsoever. Everywhere we went it was the same.
Coming from California, where we would use redwood instead of CCA treated wood, we thought we could just use cedar instead. But we found out that today, cedar is cut too young to have developed the insect-resistance of a mature tree. We were told that if we used cedar, here in humid Florida, the wood would be rotted in three months. The only wood you can put in the ground here and have it last at all is pressure-treated.
We ended up going with the ACQ posts and we’ll be painting them with a water-based exterior latex paint, both to protect the wood, and so we and our guests will not have to touch the ACQ treatment directly when we touch the gate posts. It was the practical choice here.
Question from P.S
We’re installing a butcher block counter top in our kitchen. Do you know of a product we can apply to protect and condition the wood? We thought of mineral oil, but you recommend against that in your book Home Safe Home. What do you suggest?
I’ve been using a product called B’s Oil Salad Bowl & Wood Preserver, made by Holland Bowl Mill. It says right on the label that it is made only from natural oils and beeswax. I even called the company, who assured me it was “all-natural”.
We’ve been using it on our wooden salad bowls and cutting boards since I found it in a fancy San Francisco cooking store years ago. Just recently, we used it to finish the wooden top on a kitchen island we built. It really protects the wood water beads right up and we felt good having the beeswax around our organic food. It has no odor, except for the slight sweetness of beeswax.
The Holland Bowl Mill website says it has received many letters from customers telling them B’s Oil is so gentle that they use it as their favorite hand cream moisturizer.
So I was surprised to find out that it is actually made from beeswax and mineral oil! I had a long phone conversation with the owner and made sure he understood that you cannot label a product containing mineral oil as natural. I see he has changed the description on his website after our conversation.
I set out to find a truly all-natural wood conditioner for my wooden salad bowls and cutting boards, and discovered some interesting things even many woodworkers don’t know.
It is important to apply some kind of protection to wood cutting boards and bowls before using them the first time, to prevent staining and absorption of food odors and bacteria, and to keep water from penetrating the wood, which results in warping and cracking.
Question from S. L.
Greetings! And thank you so much for your valuable service.
Any tips for a non-toxic, odor free or at least low odor lubricant for household uses such as oiling door hinges and windows? Food oils go rancid and we would like to avoid petrochemicals if possible.
Looking forward to your response. Thanks.
Use jojoba oil. You can purchase it at natural food stores or online from many sources. Just type “jojoba oil” into your favorite search engine and you will find many possibilities.
Many years ago I dated a man who sold air filters to people who were sensitive to chemicals. He used jojoba oil to oil the machines.