We have been using and selling this glue since 2002 and have never heard of it dissolving foam when properly used, so it is very likely safe, unlike other "EPS-safe" foam glues that we have used. We used to use and recommend 3M Super 77, but found that in about 18 months it dissolved the foam where the glue was applied. Always apply sparingly. Using too much will weaken bond and could dissolve foam over time. Allow 15-20 seconds before mating sprayed surfaces.