I would ask first to determine specifically what it is that they are allergic to.
If it is dust mites, then a good vacuuming several times with a QUALITY VACUUM, will help to alleviate many symptoms.
The anti-allergen treatment can then be topically applied.
When you talk about dust mites, consider this:
Dust mites do not like ultra violet, hence, during daylight hours they crawl to the darkest spot within the mattress.
They also like a warm moist environment, our sweaty beds/mattresses provide an ideal living area for them.
If you are cleaning with hwe, will your solution & vacuum reach to where these critters are.?
Bear in mind, that when you wet up the mattress, your vacuum will be less efficient than on dry fabric.
At night, these critters come to the surface to feed on the dead skin cells that everyone of us lose each night.
This, you could say, is their dining room.
They also do their business (doo-doo) out there.
This would be their bathroom.
This doo-doo contains a by-product called Der p 1, this is what causes the allergies.
Consider the human throat as a giant vacuum cleaner, sucking in these microscopic spores each and every night.
This is why people wake up in the morning feeling so crook and with the typical symptoms related to dust mites.
In my opinion, thorough, dry vacuuming, followed by the topical treatment is all that is needed for those suffering from house dust mite allergies.
The topical treatment de-natures the feces containing the Der p 1.
Sort of like encapsulating crap to render it sealed.
If the mattress needs to be cleaned for appearance, then I would encap; and probably cover with a mattress cover.
For health in regard to urine, etc; (SEWAGE), then hwe is the best way to go, providing the correct solutions for the problem are used.
This is only my opinion, not a scientific conclusion and I do welcome further dialogue on this subject as I like to listen to others viewpoints and hopefully learn more.
S-1
