Another way to attract butterflies is to put stones in the sun and they will stop my and warm theirselves. Maybe I can get some pictures this year because last year I went round and round with Kodak trying to get my camera fixed.
Also my neighbor has a muddie spot near A/c unit and they flock there to suck water out of the mud. I am trying to create a mudhole myself but was not real successful last year, I will keep trying though.