they have flooring that they think is making them sick. >> cooper: denny larson, who is executive directorrofit group called global community monitor, teamed up with richard drury, a prominent environmental attorney, to test lumber liquidators chinese-made laminate flooring. do you have any idea how much of this wood is in people's homes right now? >> drury: we believe there are probably tens of thousands of households in california that have installed lumber liquidators chinese laminates that may exceed formaldehyde standards. >> cooper: nationwide? >> drury: nationwide, it's probably hundreds of thousands. >> cooper: drury and larson bought more than 150 boxes of laminate flooring at stores around california and sent them to three certified labs for a series of tests. the results? while laminate flooring from home depot and lowe's had acceptable levels of formaldehyde, as did lumber liquidators' american-made laminates, every single sample of chinese-made laminate flooring from lumber liquidators failed to meet california formaldehyde emissions standards, many by a large margin. >> drury

. >> reporter: denny larson of global community monitor is involved in a class action suit against lumberuidators. he has received more than 1,000 calls in just three days from consumers seeking advice. >> i would suggest that perhaps the room be closed off. seal the door up, opponent window, and let it ventilate. but try not to go in there. >> reporter: there are no easy answers for consumers right now. home testing kits are unreliable so the best advice is to call an environmental engineer. in a statement, lumber liquidators said "over the past few years it has been actively engaged with the california air resources board and the environmental protection agency." the company says "we are committed to safety and will continue to deliver the best quality product at the best price to our customers." last year, charlie, lumber liquidators had sales of over $1 billion. >> rose: john, thanks. today the republican-led house committee investigating the benghazi attacks subpoenaed the personal e-mails of former secretary of state hillary clinton. this follows revelations she used her personal e-

we have the denny larson he was in that "60 minutes" piece last night. tom critler, host of money pit, dr. mitch gain nor, cornell medical center and author of a book gene therapy plan. talk about the chinese product, the laminate flooring sold by lumber liquidators. what is the problem with it? >> just as reported last night the problem there appears to be a lot of formaldehyde in the glue that puts the laminate together. if you don't know laminate is really like a sandwich. they take sawdust. they add glue and paste picture of plastic on top of it. inside the core of that board is a lot of formaldehyde based on 80 independent tests we conducted. we tried, we tried to find a box that passed and we couldn't find one. gerri: couldn't find one. i want to play a little sound from that report. listen to this. >> this is -- >> lumber liquidators? >> yes. >> part two? >> part two it is compliant with california law. listen to what the general manager told us? >> no, no. >> so -- >> have to be honest. >> is this carb 2? [inaudible] gerri: so apparently the folk