i still use both silicone and parchment paper…but i also use aluminum foil LOL
i hand wash…not as easy as say a bowl or glass but i’ve been washing those for years so i have a method (in other words i think it’s just awkward because they are unfamilar and not rigid)
food grade shouldn’t have nasty (or any?) chemicals…i’m pretty sure it’s sand and oxygen…i think some parchment paper is actually silicone paper
definitely have used silicone mats and muffin cups in the microwave…as long as it doesn’t turn white or discolor when pinched…i have some candy molds that don’t pass the pinch test so they only go in the fridge or freezer
i got a 3 pack at costco on sale for like $10. MIU brand and i have a tupperware one i’ve had a forever and ever
https://smile.amazon.com/Miu-Non-stick-Silicone-Baking-Liners/dp/B00NBAWL1C/ref=sr_1_3?ie=UTF8&qid=1494987603&sr=8-3&keywords=miu+baking+liners
my only complaint is the mat i used for my pecans yesterday retained the smell even after washing so i have to wash it again…same complaint that i have with the silicone gasket for my pressure cooker