Butterflies contained by my house? my parents are wondering why is there so various butterflies in...

my parents are wondering why is there so various butterflies in our house. it started past its sell-by date last month when 2 come in from outside from the garage, and after they kept multiplying day by time. now we own about 30 surrounded by our home. i've read that butterflies don't lay eggs indoors, but they do on plants...but how did butterflies get into my room? my door is other closed and there are no plants contained by my room! they scare me ^_^.. so where on earth are they laying the eggs?
Answers:    Are you sure they are butterflies? They might be moths, which are much more adjectives indoors. And butterflies don't lay eggs. They make cocoons, lately like a moth.

You probably hold moths, which can seemingly appear out of nowhere, but usually come in near groceries in dry products such as dried beans, oatmeal, flour, cornmeal, etc.

If the antennae is straight, you have butterflies. If the antennae is feathered, you enjoy moths. Check these images for a comparison:

http://images.search.yahoo.com/search/im...
they dont newly lay the eggs and out pops a butterfly. you get caterpillars first and later cacoon then comes the butterfly. they are probably coming within through a hole in a wall or a defectively sealed pane. unless if you had close to a ton of caterpillars in your room back and then presently they are just coming out. They may only just like the tempurature contained by your house and if they are in your room they might enjoy just wander in in that, not having anything to do near plants. Do you live in a tree house or something? this is benevolent of a wierd questing.