Hi - are these formaldehyde and toxin free?? Do you test for formaldehyde?

Formaldehyde is not used in the making of foam tiles. Formamide is, and we test to make sure it is not used in the making of our foam tiles. All of our tiles are tested for this chemical and are free of any formamide use. You can get a copy of this testing on our site when you click the 'Kid Safe' icon.