# painting walls blue re spiders

**URL:** <https://boards.straightdope.com/t/painting-walls-blue-re-spiders/544493>\
**Category:** Factual Questions\
**Created:** [June 25, 2010, 3:36pm UTC](https://boards.straightdope.com/t/painting-walls-blue-re-spiders/544493 "2010-06-25T15:36:36Z")\
**Posts on this page:** 1\
**Showing post:** 29

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**Author:** ![Crazyhorse](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/crazyhorse/32/31_2.png) [@Crazyhorse](https://boards.straightdope.com/u/Crazyhorse)\
**Post date:** [September 22, 2011, 12:10am UTC](https://boards.straightdope.com/t/painting-walls-blue-re-spiders/544493/29 "2011-09-22T00:10:58Z")

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This is related to the ‘haint blue’ question in [this thread](http://boards.straightdope.com/sdmb/showthread.php?t=621593). The last post in that thread is the answer to this one.

> [@"Haint Paint"](https://boards.straightdope.com/t/haint-paint/593856/17):
>
> False. It originally was made with lime, milk and pigment. It was supposed to look like the water, as spirits were believed unable to cross water.

They used to mix up the haint blue paint using lime, and that is supposedly also what kept spiders from building webs on the blue-painted surfaces.

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