If you want a sure bet use Murpheys Oil soap. But, you can check you insectacida
soap by just using it on some scrap plaster and seeing if you can get a good
release of fresh plaster poured onto it .
BTW just because it says it is safe doesn't mean the burnoff is.
Louis
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Louis Katz
lkatz@falcon.tamucc.edu
http://www2.tamucc.edu/lkatz/lkatz/
(512) 994-5987
