When I lived in Florida it was so bad, you’d have a shower curtain for a couple of weeks and then mildew would form. A neighbor told me to go to the local Bed, Bath and Beyond store and they have heavier shower curtain liners that are mildew-resistant. I bought one and never had a speck of mold or mildew after that. I used the liner with a decorative cloth shower curtain and it did very well in that climate. If it does well in Florida it’ll work anywhere….Highly recommended!