I'll look in on new bedding. I'm unsure if I have tinfoil but I can always buy some. What's the science behind that being better than a wet towel? I'm measuring my temperature with a digital device run by battery that is wired to a sensor inside of the cage to find the heat. I also have a portable one where at the push of a button at the pointed area it will tell the temperature. The humidity is the same as the temperature device. It's digital and has a cord with the humidity detector that goes inside of the cage. It measures from 0-99%.