Can drain flies get in through vents?

Question: We have always had water get into our ventilation. It's really bad when it rains heavily and the heat has to be on. It makes this gurgling noise and produces an awful sulfur smell. During the winter, some type of animal has gotten in the vents and died. We had to cover certain vents because of the smell.

Then, this summer came the drain flies. We checked all the drains and found nothing. They were coming up through the vents and now through our furnace. We are sure of their origin and what they are. The entire building sits on a limestone slab. We can't clean out the drains. What can we do?

Answer: This is a complex problem that would be impossible to completely address in this format. Therefore, I suggest you begin by calling us today and requesting a home inspection. Your Orkin Pest Specialist can identify where and how the animal gained access to your vent system. Once the moisture problems are resolved, the drain fly problem should also be under control. However, as long as there is damp soil or a possible leak from plumbing lines, drain flies will continue to be a problem.

Ask Orkin

Get More Answers from Orkin

How much is the cost of an exterminator?

Q

How much is the typical cost of an exterminator?

How Long Does it Take for Roaches to Die After Treatment

Q

How long after an exterminator performs a service should it take for cockroaches to die off completely?

Can Bed Bugs Jump or Fly? | How do Bed Bugs Travel?

How to Control Ladybugs and Larvae Infestations

Q

Does your company offer a solution for getting rid of ladybugs?

What Do Bed Bugs and Eggs Look Like on Clothes?

Q

What do I do with the clothes?

How Long Does Ant Bait Take to Get Rid of Ants?

Q

Since my initial Orkin service one week ago, my ant problem has gotten worse. The ants are in the kitchen now, where initially they were not. What can be done to keep the ants at bay while waiting for extra service?

How do I know if I have a termite swarm?

Q

How do I know if I have a termite swarm?

Are there over-the-counter treatments for bed bugs?

Q

What over-the-counter treatment I can buy to prevent and get rid of bugs?

What are easy bug costumes to DIY?

Q

What are easy bug costumes to DIY?

Will spraying for spiders in the basement be harmful to humans?

Q

Our granddaughter who will be living with us wants to have her bedroom in the basement, but we have spiders. If you come to spray for them will the chemicals be harmful to her?

Connect with Us

Our customer care team is available for you 24 hours a day.

877-819-5061

Find a Branch

Our local Pros are the pest experts in your area.

Get a Personalized Quote

We will help you find the right treatment plan for your home.

THE BEST IN PESTS.™

SERVICES

Pest ControlTermite ControlPrevent and Protect

PEST LIBRARY

Browse All Pests

© 2022 Orkin LLC

Terms of UsePrivacyAccessibility StatementCareers