This is another terrible thing to do to a carpet. Sprinkle-on powder products contain talcum powder, which is not water soluble. This fine powder accumulates with repeated use, and becomes embedded in the carpet, backing, and pad. It does not completely vacuum up as touted.
When subjected to moisture through proper cleaning methods, it creates problems. The drying process causes the fine residual powder to wick to the surface, creating white stains on top of the carpet, which are impossible to get rid of. As cleaning is repeated; the powder wicks to the top again and again.
There are known instances of this problem resulting in removal of 1 2 year old carpet. Certainly not a cost-efficient situation.
This article was originally published at TrustedPros.com.