Of molds and such

Once again it's summer in Evanston, and the humidity is wreaking havoc on my perishables. Today I discovered that a uncut pineapple, a pomelo, and a loaf of bread were consumed by mold. Last summer I suffered greatly due to the humidity, including expedited milk expirations, and the loss of potatoes and carrots.

Carrots don't mold, my mother informed me.

That has not been my experience. So, can anyone out there recommend a good dehumidifier?