Pre-Spraying, pre-treating and pre-conditioning are all synonymous terms for treating the carpet with cleaning agents before steam extraction. Many cheap carpet cleaning companies will not take the time to do this. But in cases of advanced soiling (and why else would you call a carpet cleaner?), it is the only way to achieve maximum soil removal.
So why should a a professional carpet cleaner pre-spray carpet in Boulder, CO? Because, just using hot water simply will not work.
Just for comparison, have you thrown your dirty clothes into a clothes washer without detergent? Of course NOT! So why would cleaning with just water work for your carpets?
For more on why should a professional carpet cleaner pre-spray carpet in Boulder, CO?, call 303-530-0646.