Each birdhouse is individually handcrafted out of white pine and designed to last many years. It is then coated with a non-toxic, edible glue, and is covered in a variety of bird seed. All houses are easily re-seeded. Birdhouses contain habanero peppers, thistle, and black oil sunflower seed. Squirrels are less attracted to thistle and black oil sunflower seed. They are also sensitive to the heat of the peppers, but the birds are not. 5 year guarantee. The birdhouses are decorated in Spring, Fall, & Christmas themes.