another person that made a similar comment, and that's the thing. pest control comes in, but rodents breed at a really high rate, and it's doable to block holes and get rid of the ones they trap/poison, but they never get the whole nests. and over time, and depending on the building (apartment vs house) there's almost no way to wall everything off. things die in the walls all the time. roaches and mice/rats breed fast enough that they keep up with the measures to get rid of them unless the company does the most long term/high-payment measures to eradicate them. and frankly, most apartment managers or rental property managers want to save a buck, so they'd rather hire cheap and fast than expensive and long term. which is one of the main reasons that infestations keep occurring.
blocking off holes with metal mesh scrub pads and paper is a stopgap. glue traps only catch so much. even pesticides only work on a percentage and not the whole. pest control, particularly in cities, need to be a full time maintenance measure, and it never is.
plus, you have places like city dumps and junkyards that you can't in any way try to pest control, and those are usually some of the larger deposits of where the pests come from and branch out of.
Re: ayrt
another person that made a similar comment, and that's the thing. pest control comes in, but rodents breed at a really high rate, and it's doable to block holes and get rid of the ones they trap/poison, but they never get the whole nests. and over time, and depending on the building (apartment vs house) there's almost no way to wall everything off. things die in the walls all the time. roaches and mice/rats breed fast enough that they keep up with the measures to get rid of them unless the company does the most long term/high-payment measures to eradicate them. and frankly, most apartment managers or rental property managers want to save a buck, so they'd rather hire cheap and fast than expensive and long term. which is one of the main reasons that infestations keep occurring.
blocking off holes with metal mesh scrub pads and paper is a stopgap. glue traps only catch so much. even pesticides only work on a percentage and not the whole. pest control, particularly in cities, need to be a full time maintenance measure, and it never is.
plus, you have places like city dumps and junkyards that you can't in any way try to pest control, and those are usually some of the larger deposits of where the pests come from and branch out of.