it kinda does both, there are more mice but the more naturalized habitat gives them more places to hide that isnt your house, especially in the spring/summer fall, but winter too. I dont know, others get mice all the time anyway, we occasionally do, i dont know if it’s an improvement or not. I do know that a well sealed house in the woods with totally native habitat for acres (not mine sadly, lol) has far fewer pests than in any suburb house so i think there’s merit.
no, i mean theoretically who knows, but practically no. compressing something to be more dense than a solid is energy intense. you are surpassing the bond energy of moleculesto do it. second, compressing enough osmium is going to take less, but still bigajoules, of energy. the compressive stress is immense. anything that could hold thht stress is much too big to fit in the package.