Due to the nature of the polypropylene being chemically inert, very little will attack the material. That also means that very few adhesives and paints will adhere satisfactorily. For an adhesive, we have found that 3M® P-8005 two-part adhesive works very well with Pelican Case material. It has also been reported that Shoe Goo works very well. For paint, Krylon has a product out called Fusion that they claim will adhere to polyolefin-based materials like polypropylene. Please visit our Technical Bulletins page under SUPPORT for more details and a list of recommended adhesives.