I am going to have to massively disagree about this
even though I generally feel gringoization of almost anything is BAD, the FACTS are that there are not all that many gringos in Cali, even in the north side zone around Sexta where they tend to stay.
I personally like almost NOTHING about the casas, they are low end brothels with high turnover, the big difference being that you will often find girls who look like you´d never find them in a brothel. But here the brothels are full of them. I´d love the places if I were 18 again, and it´s worth noting the large majority of the clientele in these places is probably 18-25 and they are Colombians. I have also noted before that the ambiance isn´t helpful and doesn´t tend to encourage good "performance" either, actually quite the contrary I think.
So comments like "gringos have ruined Cali casas and now all the blowjobs are covered" etc are frankly ERRONEOUS. The vast majority of the clientele is local, even in the gringo north side zones around Sexta. Even in the most popular gringo viisted casa, Clinica de Amor, the time I stuck my head in there, around 4 pm last week, there was maybe ONE gringo/extranjero in the place and the rest were Colombians. Even a place like Escoces, doesn´t see as many gringos as one might think, though it does see a lot of extranjeros.
the so called Piscina casa I was told by a taxista attracts a very bad element, and actually In have been told about a multitude of other casa and take out discotheques, etc etc that exist but have probably almost never seen a gringo, due to where there are located and due to the fact, you´d better have a local friend accompanying you if you go there.
so, I basically wanted to throw that in.
Yes, gringos are clowns and fools and usually destroy price structures, etc but they are not in any way shape or form driving the Cali casa market (which I am no fan of btw) nor are they responsible for the preponderance of covered BJs (one would think lots of govt public health warnings combined with dealing with yards of dick daily might drive a girl to consider it)
if anyone wants to post or withhold info, that´s their individual decision which I respect.
btw, I´ve been here several weeks and have yet to speak to a gringo (mostly by choice, but I also haven´t seen many, they all tend to be centered around the Don Jaime). The beautiful thing about Cali is you can completely fucking avoid them if you want to even in the Versalles zona.