I tried to send a message to your the feedback email address on your dustmite guide site but gmail told me it was undeliverable because the address was not found.
What I emailed about was asking what you meant by biweekly for washing bedding - is that twice a week or every other week?
In the early days, populations of eggs and protonymphs are high and perhaps you haven't learned to control humidity in different weather conditions, washing 2x a week will be effective imho.
But if you can maintain low humidity for a longer periods, the dust mite populations in your home will go down and frequent washing will be less important.
thanks for letting me know my email fwding is not working. Twice a week. Be sure to wash as hot as your machine can do. I found that the highest setting on my front loading LG washer does 158f and is more effective than the next hottest setting.
What I emailed about was asking what you meant by biweekly for washing bedding - is that twice a week or every other week?