How Long Does It Take for an Exterminator to Get rid of Roaches?

Roaches not only cause damage to your wooden furniture and infrastructure but are extremely harmful to your health as they are one of the prominent sources of allergens and trigger asthma.

According to the World Health Organization (WHO), they are “unhygienic scavengers in human settlements” and help in transmitting various intestinal diseases such as diarrhea, cholera, dysentery, and typhoid fever.

It is immensely difficult to get rid of a severe roach infestation with the help of repellents, sprays and various Do It Yourself (DIY) methods because they hide in multiple, dark areas, multiply at a rapid rate, and are immune to commonly used pesticides.

However, Professional Pest Control methods found relatively satisfying in getting rid of roaches.

How long does it take for an exterminator to get rid of roaches?

Once the treatment is done, it usually takes at least two weeks to get rid of roaches if the level of infestation is between mild and moderate.

But in case of large or extreme infestation, you may need to do multiple treatments to get rid of them completely.

The following factors play a crucial role in determining how much time it would take for the exterminator to get rid of roaches:

  • Size of your apartment or place: Since you can cover a limited area over a particular period of time, then apartments or places having a large area would take more time and multiple treatments to be completely treated. However, if a particular room or area of your place is infested, the treatment can be completed in a single day as well!
  • Type of treatment you opted for: There are various treatments to choose from if you want to get rid of roaches and other pests. If you opt for a treatment just to get rid of roaches, it would take less completion time as compared to when you opt for a more extensive treatment to get rid of other pests as well.
  • How mild or severe the infestation is: If the infestation is severe, it might need multiple treatments in order to eradicate the roaches because they can quickly move from one place to another. However, if the infestation is mild and limited to a certain area, it can be done in few days.
  • Number of treatments required: As the number of treatments would increase, so would the total time. Apart from multiplying the time with the number of treatments, you would also need to the ‘gap time’ between the treatments as doing multiple treatments over a short period can cause severe health problems.

Apart from this, you need to sincerely follow all the instructions given to you by your exterminator to get the desired, satisfactory results.

How much does it cost for an exterminator to get rid of roaches?

The following table gives you an idea of the approximate cost that you may have to incur while having an exterminator treatment:

Average cost$150
Low Cost$100
High Cost$400

A single exterminator treatment may cost somewhere between $100 and $300, and can go as high as $600 as the price of these treatments varies, depending on the following factors:

  • Type of treatment
  • The severity of the treatment
  • Number of treatments required

If you are looking for a more extensive solution to tackle severe infestation, then the cost can raise up to $6,000 as well.

How often should an exterminator spray for roaches?

Your exterminator should visit the treated place regularly in order to keep a check on any signs of any re-infestation, activity of pests, and the preventive measures such as traps placed by them (if any), to make sure that the treatment is working.

With regular visits, pest control professionals can also inspect the infrastructure of your house and check any other pest-related risks. In addition, regular visits help in keeping the roach management costs low.

For homes, apartments, and other residential places, we suggest regular roach control treatments on a quarterly basis, that is, over the course of two to three months, in order to prevent common pests effectively.

For large or severe infestations, monthly treatments over the course of three to six months are recommendable. However, the size and location of your place, time of the year, and weather conditions impact the treatment and its frequency.

The following table summarizes how often should an exterminator spray for roaches at your place, depending on the severity of the infestation:

PlaceMild InfestationSevere Infestation
Residential Places: Home, ApartmentsOnce every two to three monthsMonthly treatments over a course of six months
Outdoor Places: ParksFortnightly treatments over a course of two monthsWeekly treatments over a course of three months


Pest Controls and Exterminators are costly as compared to other ways to get rid of roaches and other pests, but they are also much more effective than the other ways and ensure satisfactory results.

The whole process is costly because it is done by professionals, but they also visit the treated place for regular checks which eliminates the chances of other severe pest-related infestation, which saves a lot of money.