Vinyl surfaces can be tricky when it comes to sterilization, and that's mainly due to their porous nature. Regular solutions like 10% bleach or 70% isopropyl alcohol aren't effective at killing microbial spores. UV light could be used as an alternative, but that's not a perfect solution either. Over time, the UV light can actually wear down the vinyl, causing damage. Further, using stronger disinfectants like quaternary ammonia could be used to kill the spores but they too will damage the vinyl surface over time. Finding a way to sterilize vinyl without harming the material isn't straightforward. The best case scenario would involve utilizing a stainless steel glove box for your application.