
Writing this had me in a bind since I found this in one of the old how-to notecards we have lying around at home. After a bit of Googling, I found similar formulations but from different authors have not cited where this came from (either this is an old household remedy or the real source hasn’t been cited).
More MacGyver household remedies again with this homemade roach bait formula.
Ingredients
1/4 cup lard or shortening
1/8 sugar
8 ounces powdered boric acid
1/2 cup flour
1/2 chopped onion
Water to form a soft dough
Preparation
Now you can place these where Mr. Cockroach and his gang usually lurk (cupboards, under the sinks, under the fridge and dishwasher…) Just keep them away from pets and small children. Boric acid is poison! It’s the real active ingredient in this mix.
Sources(?): Heloise, Mike Holigan
10 Responses
Nicki
September 27th, 2007 at 9:51 am
1I have indoor cats. Is this harmful to them if they play and eat the coakroach after it has ingested boric acid?
LaMonte
October 4th, 2007 at 1:36 pm
2Hello Nicki. Boriac Acid is HARMFUL to anything that eats it. On the bottle it states that it shouldn’t be eaten. It IS a poison, so if you want your cats to live, I wouldn’t place this stuff on the floor. I would place this in the cupboards and places where your cats can’t get to. The issue here is that the roaches will eat this mixture…it’s the lard, sugar, flour and onion that attracts them. Once eaten, the roach will go back to its nest where it will die. Or it may die BEFORE it gets to the nest. In either case, roaches are cannibals and once eaten, that one will die and so on and so on. It will soon be liked to Typhoid Mary…as the roach dies, another will eat it and soon, that onw will die and so on until you have a nest full of poisonous carcasses, turning the nest itself into a death trap. I’m going to try this concoction and see if it works. Good luck to you.
Jay
August 7th, 2008 at 11:18 am
3Hey LaMonte, for you information Boric Acid is a desiccant, and kills by dehydration. It is not a poison as poison is most commonly known. Boric acid has been around for roach control for over 60yrs and is a common product in eye wash, make up,etc. That being said I do not recommend eating it but it is one of the safest products you can use for the control of roaches.
Marcie
October 14th, 2008 at 3:05 pm
4I have cats also, so the best thing is to take empty soda bottles and mix a dry mix of 1 cup each: flour, sugar (granulated or powdered) and boric acid. You just leave the cap on the bottle, poke a hole in the top of the bottle big enough for the creepy bugs to get into, and put it where roaches can get but your cats can not. This is so they wont play with the bottle and spill your mix more than anything. It’s not really going to hurt your cat to get a little on it, but it shouldn’t eat a bunch of it of course.
If fact you can mix 20 percent boric acid with 80 percent whiting and sprinkle it into carpets, and vacuum a week later to get rid of fleas, eggs and all.
wendy
April 5th, 2009 at 8:30 pm
5These idea’s are great but what i really want to find out is how to make a lure without ANY chemicals. An old lady once told me about beer in a jar with vaseline spread up the sides so they couldn’t crawl out again…..but I cant remember the whole story.
Diana Crabtree
April 8th, 2009 at 2:33 am
6Boric acid has about the same toxicity of table salt. It is the main ingredient in “Terro” ant killer. You can make your own terro with 1/2 cup water, 1 cup sugar, and a tablespoon of Boric acid. put it on a cotton ball, put it where the ants are found, and get ready for a good show. Tons of ants show up, they drink the liquid and bring it to the queen, killing the whole colony. It is tempting to kill them all, but they will die eventually, just let them take the mixture to the queen. It is so great that it is so effective, but non toxic!
Also, like Jay said, boric acid is a dessicant, not a poison, so the cockroaches can’t build a tolerance to it
john
May 17th, 2009 at 12:26 am
7I once had a coffee can with about an inch of tranny fluid in it out in the backyard for about a week after doing some trans work on my car ,went back to the coffee can a week later and found a buch of dead roachs that had crawled into it to get to the sweet smelling tranny fluid ,seemed to work ,i have also used boric acid with good results, i just take a piece of bread and put it in a baggy with some boric acid in it and shake it up and then with some gloves on i take the piece of bread out and set it out for the roachs in the evening for them to eat then i discard it in the morning ,works for me.,also you might have to repeat the process a week later as a follow up.
michael
July 5th, 2009 at 9:30 pm
8boric acid is not the safest roach killer. Fossil shell flour is a lot safer around pets in fact it is good for both human and animal consumption in small doses as it contains 14 trace vitamins. It kills all exo-skeleton insects including fleas. It will not however kill flea larva.
Charles Jones
October 27th, 2009 at 1:58 pm
9Boric acid, is good but baking soda will do the same thing, make the mix as stated above, just with the baking soda.
as for the other way, all you have to do is take any old jar, then stick your finger in some lard, or shorting, rub it around the inside of the jar, then but some bait in the jar, set it in and under counters, then flush them down the tolet.
Thabo
November 7th, 2009 at 1:35 pm
10Hi thanks al i had great laught at the beer can one! I got few trial home mixes going wil post details on them sometim. Keep up roach huntin!
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