[oneplusone]

I have actually been looking for something like this, but I am more concerned about mould. Would that show up in a test like this? Our washroom has mould growing which we keep fighting back with bleach, but I would love to know what kind it is and if it is dangerous. Could this work for such a use case?

The tests that I did find were bloody expensive (300$+) and had to be done one per room. Too much for us.

[abakker]

FWIW, borax will likely help you combat mold regrowth more effectively than bleach. Another trick here is to constantly use borax on laundry like towels which tend to carry mold from being hung up wet. Finally, add a strong borax solution to a carpet cleaner/washer and do all the carpets in your house. This has REALLY helped me deal with mold in our house. Since starting this regime, old coffee grounds in the compost bin that used to grow mold in a day or so no longer grow mold, even after a week (this was a test, not a typical situation for my house).