Wednesday, June 22, 2011

My organic war on a fleas: Dumped Terminix, embraced light traps

Cat flea. Photo:

Shot Grady dead
Our 100-year old house is cursed, say the neighbors.  A previous owner of the house shot and killed his next-door-neighbor from the back porch.  Seems his neighbor Martha (who was also his sister) cut through his backyard one-too-many times.  It irked him to see her scampering up his hill every morning on her way to town, brazenly ignoring his "Keep Out" requests. So one morning, while arguing with Martha's husband Grady about the trespassing, he yanked out his gun and shot Grady dead. 

Not sure what year that was, but it was a long time ago. The house sat idle for decades, deteriorating slowly. By the time we bought it last year, it was in desperate straits. We debated whether to rehab it or tear it down.  But the broad front porch and hidden closets won us over.

Feral black cats mean trouble
The flea problem started after we were well into the renovation. First clue was a gigantic raccoon living in the attic. The holes in the roof had to be closed up, so the raccoon was evicted, its dung piles left behind. Then we realized feral black cats were living in the crawl space. The contractor chased the cats out, closed off their access. A week later, their fleas all migrated into the living area of the house looking for new warm-blooded hosts.
Exterminator spraying baseboards

Bad move: I called Terminix
The contractor told us no one could go in the house, the fleas were so bad.  I was living out of town, so I picked the cheapest exterminator I could find by calling around: Terminix.  A "technician" came out and sprayed the crawl space and all the baseboards in the house with a chemical brew of Permethrin and (S)-Methoprene (as they told me later).

Scary "effects" of the chemicals
A week after that, the fleas were back in full force. Terminix came back, did it all again. A few days later, I arrived in town to spend a few nights in the house, sleeping on the floor.  Five minutes after I lay down in my sleeping bag, my throat began to burn. I got up to make sure all the windows were wide open, moved as far away from the baseboards as I could in a room that had been mopped, then went to sleep.  The next day I developed a cough, which progressed into a rip-roaring cough that's kept everyone in the house awake every night.  It's been 3 weeks since then; the cough has still not gone away. The hacking got bad enough to scare me - started thinking I had pneumonia or TB or lung cancer. Went to the doctor who ruled those out with a chest x-ray, said it could be from the inhalation of chemicals, no way to tell.  The "Material Safety Data Sheet" that Terminix sent me when I asked for chemical information says, "Inhalation: remove victim to fresh air. If not breathing give artificial respiration, preferably mouth-to-mouth. Call a physician if effects occur." Effects? Well, whatever. I guess my cough is an "effect."

Fleas return; Terminix says "Too bad"
Okay, so a few days later the fleas began showing up again. I called Terminix who said tough luck; our only option was to sign up for the "Annual Plan" (monthly sprays from the technicians). That was easy to turn down.

Just out of curiosity, I called an exterminator with a "nice" sounding name, one the contractor recommended: "Home Team Pest Defense." They refused to tell me what chemicals they would use. Said the technicians would divulge the chemical names when they arrived to spray. Coughing, I hung up.

We kicked the chemicals, went organic

Diatomaceous earth
After deciding to avoid more toxic spray, our first move was to buy a box of "food grade" diatomaceous earth from Deep Roots Market.  Diatomaceous earth clogs the breathing spiracles of insects, killing them. It's a fine silica powder made of the cell walls of diatoms - a type of algae. We sprinkled the d.e. over the floor of the entire house and left it in place for 10 days. No one entered the house during that time, to avoid feeding any of the fleas (which need a blood meal to reproduce). By leaving the d.e. in place for 10 days, we also killed any hatchlings of eggs laid before the adults succumbed.

That plan worked well. But not quite well enough. A few days after vacuuming up the diatomaceous earth, fleas once again appeared - in the bathroom, then a few in the room next to the bathroom. Every day, 25 fleas or so were showing up in the bathtub (all killed by pouring shampoo on them).

By watching them, we figured out they had to be coming from a hole between the tub and the wall. A passage to the crawl space? Don't know. We caulked every crack and hole in the area of the tub, and the flow trickled to around 5 fleas per day.

Needed more organic tools to get remaining fleas
Our daughter and her boyfriend needed to move into the house pronto, so covering the floors with diatomaceous earth was no longer an option. What to do?

We searched the internet, made lots of phone calls, came up with a plan.

Vacuuming is essential
Almost every source recommended daily vacuuming, then sealing the vacuum bags in a plastic bag and throwing them away immediately. My daughter read that 94% of fleas present at any one time are sucked up in a single vacuuming. Some said that a vacuum heavy enough to vibrate the floor does better - shaking the fleas and eggs loose.

Permaculture forum is a good source of info
This permaculture forum is one of the most useful sites I found.

Three-pronged strategy from the forum's administrator:
"A good solution: flea traps, daily vacuuming, DE in places the vacuum cannot reach (and where you aren't going to kick up the dust) plus a daily flea combing for your pets. As time passes and the flea traps and the combing is not turning up any fleas, you can cut it all back to once or twice a week."

So we redistributed diatomaceous earth in places the vacuum could not reach.
Diatomaceous earth in bowl

Light traps are a powerful tool against fleas
And then the light traps. Ken and I had used light traps to fight a flea infestation when our kids were babies, and they worked great. Fleas are attracted to the heat of an incandescent bulb, and when the bulb is suspended over a pan or plate of soapy water, or something sticky like honey, they fall in and they either drown or get stuck. We used soapy water. Worked like a charm. It's recommended to keep the traps going (at least every night) until no fleas have been caught for a week. Below, pics of homemade light traps for fleas. The first one is our current trap.

 Our homemade light trap. Photo: Sadie Kneidel
 Photo courtesy of
 Photo courtesy of
 Photo courtesy of Garden
Photo courtesy of

Photo courtesy of In this pic, part of a fan casing covers the trap to keep kids and pets out, with just a night light on top.

Another excellent online resource:
The site Beyond Pesticides said if you steam-mop, "the warmth and humidity of the steam may also stimulate remaining flea eggs to hatch a day or two after the cleaning, so some fleas may reappear. The few fleas that hatch after the steam cleaning should be the last of the flea population, and can be caught with a vacuum." It goes on to say, "If only a few fleas are caught [by the light traps], the infestation is very small and can probably be controlled by the traps alone, and the traps should be left in place until no additional fleas have been caught for a week. If 20 or more fleas are caught in a week, there is probably a more serious infestation, and it is time to find the source."

One last tool: jars of alcohol
With our original infestation years ago, Ken and I each carried a jar of alcohol and walked across every square yard of the house every day, slowly. And every time a flea jumped on us, we plucked it off and dropped it in the alcohol. This is better than squashing them, which could squirt out live eggs onto the floor. We kept the jars on top the fridge where the kids couldn't reach them.

Oh yeah - one more! A cayenne charcoal bomb
My daughter talked to some friends who made a cayenne bomb and said it killed all their fleas. So Sadie (my daughter) set off such a bomb in our crawl space yesterday.She said she got hookah charcoal from a local hookah store. She lit the charcoal with a lighter, per instructions from the store, then put a spoonful of cayenne pepper on top of it. Closed it up in the crawl space. We'll see if it helps. I was unable to find out anything about this from an internet search.

So, although the fleas have been a drag, I don't think the house is cursed! We're about to squash the blood-sucking fleas, I think.

Just to keep the vibes good, we're thinking of having some kind of house-blessing ceremony. The fleas will not be invited.

If you have tips to share, about fleas or house blessings or exterminators, please post comments.

Keywords: Terminix pesticides Home Team Pest Defense fleas organic toxic reaction light traps heat traps fleas flea treatments flea spraying lung irritants diatomaceous earth fleas vacuuming Deep Roots


Anonymous said...

I am actually an owner of a company called Orgreenx in Bradenton, FL. We provide Organic Lawn Fertilization and Indoor Pest Control. I had a client that had a HUGE infestation of Fleas I am talking thousands and thousands inside his home. I went in there with my team and started fogging our Organic Product "Cedar Oil" being the Active agent and Hydrated Silica "food grade approved" being the Inert....Wow! The results are incredible. It took us about 2 times this one instance to completely erradicate all fleas. Client Happy & we were happy. We charged only $149.00 to do it...Cedar Oil is the way to go.

Astrodud's blog said...

Any success in your war on fleas? We are having a very similar problem right now - I think because of 2 raccoons that we kicked out of our crawlspace 2 years ago. Thanks for this (old) post!

Astrodud's blog said...

Any success in your war on fleas? We are having a very similar problem right now - I think because of 2 raccoons that we kicked out of our crawlspace 2 years ago. Thanks for this (old) post!

Stephanie Hyde said...

I work for a company that sales diatomaceous earth and I was wondering if you'd be willing to post a link to our products on your website. By doing so your readers would be able to easily see where they could purchase DE and gain more information about its uses.

If I don't hear back from you before, I'll contact you again next week.


Anonymous said...

I have fleas in my home and will try your solutions,,,,,,,i moved into this home 4 years ago and have been fighting roaches with the food grade. Did not know there were roaches here when i moved in and cannot get rid of them PLease if you have any solutions,,,help,,, i have been fighting them for 4 years,,,,hope to move out and do not want to take them with me