I would rather remove this glass as it is free than buy new materials. I have separated the caulk from one side but that didn't seem to help. I suspect that the doors may be sealed at the factory meaning I'd have to drill or cut out the glass. Does anyone know more about this? Thanks!
Probably synthetic resin Synthetic resins are materials with similar properties to natural resins—viscous liquids capable of hardening. They are typically manufactured by esterification or soaping of organic compounds. The classic variety is epoxy resin, manufactured through polymerization-polyaddition or polycondensation reactions, used as a thermoset polymer for adhesives and composites. One more category, which constitutes 75% of resins used, is unsaturated polyester resin. Ion exchange resin is another important class with application in water purification and catalysis of organic reactions. See also AT-10 Resin.
You have to decide if you want perfect sheets or keep allowing your dogs to get on bed. I have 700 800 thread count sheets with wrinkle guard still there will be few hairs in the sheets. The hair gets embedded in the fabric nothing much you can do about that. Shake them out before putting in the wash, wash on the longest time then use 2 dryer sheets. I get a good bit of hair out but there is small amounts left that's all part of having dogs allowing them on the bed sleeping with you. Brush dogs well esp. in the evening before going to bed might help also.