Butterfly houses work as decorative items in the yard, but butterflies will not take up lodging in them. Wasps and spiders might.

If the feeder is simply a device that presents a surface to place food on, they work fine.

Both of these topics are covered in this forum's FAQ.

Larry, would you post a photo of one of your feeders? The description is good, but I would benefit from a visual as well!
Thanks,
Kristi

I do not have any butterfly feeders myself, that FAQ text was sent to me by formerly active member mcronin.

Thanks. I thought it was your post. I can't wait to transform my backyard!
K

Good thought!..
hope you get your butterfly work.