The Sanity Inspector wrote:

Is it just my imagination, or are Raid and Hot Shot and Black
Flag all weaker now than in years past? Have all the effective active
ingredients been banned over tha past thirty years? Seems like bug
spray used to pack more stopping power. Now, the roaches and such
crawl around for several minutes, have a grand mal seizure, and don't
die for another several minutes. And flying insects easily zoom
away--they only drop if you corner them.

We fought roaches in our place with every possible spray, including those
the pest control people brought. None of it worked. Then, after reading an
article on roach motels, I decided to give Combat a shot. They were the
people who developed the original roach motels and their formula is
supposed to be especially good. Result: One week of Combat and the roaches
disappeared. And they haven't been back since, except for the occasional
straggler who wanders in through an open door. The ones in the cabinets and
walls are all gone. It has served us well for a couple of years now.