Canada Modification for German Cockroaches
Please keep in mind that this is just a modification. It is still important to watch the German cockroach video and to take good notes. You need to do this correctly for it to work. After you are sure that you understand the treatment procedure, then simply apply the modifications.
German cockroach video: https://youtu.be/FoxCB5qLPMA​
You have very restrictive laws in your country with regard to pesticides, so you may not be able to obtain the products in my video. However, it is my understanding that it is legal to buy boric acid there and you may be able to obtain it from a local store or by ordering it from Amazon. You should apply it in all the places that I show in my video and make sure that you apply it under all the baseboards in the entire house as well. Basically, you want to apply boric acid to virtually every place where it will not be disturbed by people, pets, or air currents. Please note that you should not mix boric acid with water and you cannot apply it in places that are wet because that may render it ineffective. Also, apply the boric acid AFTER you do all the spraying with diatomaceous earth that I am going to explain. If you live in an apartment you cannot drill holes in the walls, so just skip that part of the treatment. If the boric acid is too expensive, you can use diatomaceous earth instead as a dust.
Next, you should be able to buy food grade diatomaceous earth (DE) where you live. You can mix DE with water and apply it everywhere I tell you to use Nibor-D in my cockroach video. In the interest of full disclosure, I have never tried DE to treat a cockroach infestation. I do know though that it does kill cockroaches and I think it can be mixed with water, although that is somewhat controversial. Some people claim that it works fine, while others claim that, like boric acid, you cannot mix it with water, or it stops working. So, I cannot guarantee results with it. The exact dilution rate is unclear, but I have read that you can mix it 1 part DE to 4 parts of water by volume. However, one person that did this reported back that 1 to 4 is too concentrated, and it makes a real mess of things. So, you may need to tinker with the dilutions rate. Try 1 to 8 to start. You just need it to leave behind a light dust. It may look unsightly, so you can avoid applying it on surfaces that you can see, like the outside of cabinets. This is going to leave a white film on everything you spray it on, but you should know that, when you are ready to move out, the DE can be easily washed off. I will place a link below for an article that I found on the internet. Be sure to spray the DE on every possible surface imaginable that will not be damaged by water unless it really looks bad. The key to eliminating German cockroaches is thoroughness. You must apply a pesticide every single place that a cockroach could possibly place its feet. I know that it is horrible to live with this DE covering just about everything, but it sure does beat living with cockroaches. At a minimum, apply it inside cabinets, on baseboards, and any other place a roach would need to walk on to move to another area. The more places you treat, the less likely the roaches will be able to escape the treatment.
After you are finished applying the boric acid and the DE, then you should also apply a bait. Obtaining a good bait may be difficult where you live. If you cannot obtain any commercial baits, you can try making your own bait. This is something else that I have personally never tried. However, you can try to mix equal amounts of sugar and DE with a little water to create a paste. You can do the same thing with boric acid. I know I said that you cannot mix it with water, but creating a bait is an exception, because the roaches will be eating it instead of walking through it. You see, roaches clean themselves all the time and they hate getting anything on their feet. So, when they walk across either boric acid or DE, it gets stuck to their feet, and they lick it off. After they ingest it, it literally cuts holes into their stomach, and they dehydrate to death. While you may be able to get DE wet, if you get boric acid wet, then it dissolves in the water too quickly, and will not leave behind any dust. In the case of a bait, they will not be walking through it, so it should be fine. I do not think this paste will stick well to surfaces, so you may have to simply put a little bit of it on pieces of paper and place them strategically where the cockroach activity is. I have no idea if either of these formulations will work because I have never tried them, but I think it's worth a shot, if you cannot find a commercially made product. Never apply any type of pesticide over the top of a bait because that will prevent the cockroaches from eating it. That is why you always use the bait last. The correct order of application is always, liquids first, dust second, and baits last. You may need to experiment with the formulation to make it the most appealing to the roaches. That is to say, if they are not eating it, try adding more sugar. Some people have told me that adding egg yolks to the mix helps, but I think that may create some unwanted odor. One of my subscribers is experimenting with mixing boric acid with peanut butter. I don't know if that will work, but it has the advantage of being able to apply it to vertical surfaces.
The biggest problem you will have is treating appliances and electronic devices. You need the Gentrol IGR disks to treat these items because you cannot treat inside of them with DE. Unfortunately, I do not have a good solution for that. Other Canadians tell me that US Pest Supply will ship all the products to you for a price. I am told that shipping can run from around $80 to $125, but at least you can obtain what you need. At a minimum, you at least need the Gentrol IGR disks, or you are not going to fully eliminate the infestation. I'm sure that the Canadian government meant well with these ridiculous laws, but they failed to realize that they were dooming people to life with cockroaches. Not everyone can afford a pest controller, so the less fortunate end up getting their homes eaten by termites and lots of folks end up being forced to live with roaches that can spread disease. It's a clear example of the law of unintended consequences. They clearly were not thinking through all the possible ramifications of passing such a law. So now they placed you in the position of either violating a stupid law or living with roaches. I cannot tell you what to do. All I can do is explain the options. I wish I had a better solution, but this is the best I can do. If you go to the US Pest Supply website, just search for the products you need. I think they have them all.
Article on diatomaceous earth: https://www.essentialhomeandgarden.com/how-to-apply-diatomaceous-earth/
Boric acid: https://www.amazon.ca/Eco-Living-Solutions-Horticultural-Multipurpose/dp/B0B566B3NV/ref=sr_1_6?content-id=amzn1.sym.e2dad7fc-23bc-4aa0-8e2f-dae9efc1e5d0%3Aamzn1.sym.e2dad7fc-23bc-4aa0-8e2f-dae9efc1e5d0&keywords=boric+acid+powder&pd_rd_r=90d10c14-b78f-412b-b959-c393394fb60e&pd_rd_w=sqMcr&pd_rd_wg=XwVEF&pf_rd_p=e2dad7fc-23bc-4aa0-8e2f-dae9efc1e5d0&pf_rd_r=VQ82KMHS8R9RJVZ472PD&qid=1695808181&sr=8-6
Diatomaceous earth: https://www.amazon.ca/Diatomaceous-Earth-Cockroaches-Crawling-Insects/dp/B098TX2Y4C/ref=sr_1_11?crid=3PKZ65RT4GUZ3&keywords=diatomaceous+earth+insect+killer&qid=1695808345&sprefix=dia%2Caps%2C121&sr=8-11
US Pest Supply: https://uspestsupply.com/