I know a lot of us use the foam puzzle mats at home. Make sure the mats that you have are formamide-free. Ours was given by FIL. More than likely, we'll get rid of it.
I wonder how I find this out about mine? It doesn't say on the packaging. They're just the big plain sheets though, not the puzzle type...does that make a difference?
i think it may be the same since they are all made of the same material. the website says they don't recommend the use at all even if the manufacturers claim there's little or no traces of formamide.
Re: PSA: Toxic foam puzzle mats