Because foam insulation expands to fill and seal cracks and holes, it can serve as an effective barrier against household pests such as rodents. Inspect your home or consult with pest control specialists to determine where the animals are gaining entry, then spray foam insulation into those holes. Additionally, you can use foam insulation to plug bee or wasp nests.
The area around window and door frames can become worn with use and separate from walls, leaving areas through which air can seep and even pests can enter. You can use foam insulation to eliminate window or door drafts, thus improving your home's energy efficiency and saving money on home heating and cooling.
You can use foam insulation to protect against water seepage from warm moist air collecting inside walls and basements, or from rooftop snow melt infiltrating attics. Special types of foam insulation exist specifically for forming a watertight seal that can help prevent wood rot and the formation of mold and mildew.
Instead of using packing peanuts or packing wrap to pack delicate objects, use foam insulation to create specialized molds that conform to the objects' shapes to help prevent breakage. Simply spray foam into a zip-top bag and press the object into foam while it remains soft and pliable.