@xtsho,
The Nuke Em stuff is funny.
Active Ingredients By Weight
Citric Acid 0.05%
Inert Ingredients
Water, Yeast (Enzymes), Potassium Salts of Fatty Acids,
Sodium Benzoate, Potassium Sorbate
Total: 100.00%
What is listed as it's "inactive ingredients" (yeast enzymes) are actually the facilitator to why the citric acid is able to work.
The yeast enzymes (most likely protease, amylase, and lipase) cause the chitin to break down a little which causes the insect to molt prematurely and then the citric acid burns the shit out of them!!!
By the way "potassium salts of fatty acids" if fancy talk for potassium based soap (Dr. Bronners).
The sodium benzoate and potassium sorbate are food-safe preservatives.
Just so you know...
In my opinion $26 for 8oz of this stuff seems a bit pricey for what it actually is.
There's no "magic" to it.
I mean a bottle of Dr. Bronners unscented soap (32oz), a bottle of Now Foods Super Enzymes (180 tablets), and some citric acid (1 pound), would cost you like $43.42 off Amazon and this would be enough to make gallons of the "concentrate."
So the Nuke Em route is $3.25/oz. of "concentrate."
The DIY route is $0.14/oz. of "concentrate."
All of these things are pretty shelf stable by themselves, so they will only begin to degrade once they are mixed together with the water (which is probably between 4 to 6 ounces for the 8 ounce "concentrate"). The Super Enzyme has a shelf life of about 3 years, but the others are pretty much indefinite as long as the citric acid isn't allowed to get too hot.
Here are Amazon links if you want to buy the "raw" materials.
They ARE NOT affiliate links, so I don't benefit in any way if buy from them or not.
If anyone wants to know how I would mix this, just message me and I will tell you.
Soap
https://www.amazon.com/Dr-Bronners-Pure-Castile-Liquid-Soap/dp/B00DAI76TC/ref=sr_1_5_a_it?ie=UTF8&qid=1548731877&sr=8-5&keywords=dr.+bronners+unscented
Now Foods Super Enzymes
https://www.amazon.com/NOW-Super-Enzymes-180-Tablets/dp/B0013OXKJA/ref=sr_1_4_a_it?ie=UTF8&qid=1548731845&sr=8-4&keywords=now+foods+super+enzymes
Citric Acid
https://www.amazon.com/Milliard-Citric-Acid-Pound-VERIFIED/dp/B00EYFKKZC/ref=sr_1_4_a_it?ie=UTF8&qid=1548731899&sr=8-4&keywords=citric+acid