Butterfly house: Slots in the House keep birds out while giving butterflies protection from the wind and weather. Place the butterfly house in your garden, and when it gets cool at night the butterflies seek shelter and may use your house. By having a nectar source close by (flowers and/or our butterfly feeder) butterflies are more likely to visit your butterfly house. Each Butterfly House has a door for cleaning and for placing long twigs inside to give butterflies a nice resting spot.