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Best mold testing and remediation specialists near Keystone, SD

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Top-Rated Mold testing and remediation specialists in Keystone - Updated Nov 2026

Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Dry-rot, Water or Pest Damage - Major Repair

Serving Keystone, SD and surrounding areas

In business since 1971

Credit card accepted

"AHS is ok. They cover repairs of most everything under the roof of your house. The companies that contract with them are not always the best. You call AHS with the issue, they send a fax to the repair company and give you the contact info. If they don't contact you within 24 hours, you call them. Sometimes they answer, sometimes they don't. When they arrive (usually three days or so later), they service the item. if it has issues within the 90 days, you call AHS again, they are sent out with no charge. If the serviceman decides the unit is unrepairable, AHS will allow you to choose a replacement from their listing (usually not as good as what you have) they will install and remove your old item, or give you wholesale amount to buy and install your own. Prices vary on what you want covered and what you want the copay to be, plus where you live. For me it is 49.99 per month with a 75.00 time of service order. You can have more than one item serviced at the same time under the same fee. If you have a SEAR product the repair guys are great. Not that wild about the other ones they send out. But it is a big savings compared to calling someone on your own. The cost of service is only the 75.00 copay."
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+2

Recommended by65%of homeowners
Avatar for Midas Remodeling LLC
Midas Remodeling LLC
4.3(
9
)
Dry-rot, Water or Pest Damage - Major Repair

Serving Keystone, SD and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"They where great, they where on site the next day after contacting them and had the problem fixed in hours. Very professional in all respects, I would also like to say that i called several other companies & had to leave a voice mail and I still have not heard back from them."
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Recommended by100%of homeowners
Healy Home Services LLC
5.0(
1
)
Dry-rot, Water or Pest Damage - Major Repair

Serving Keystone, SD and surrounding areas

In business since 2022

Free estimates

Credit card accepted

Hi, I’m Micah Healy, Owner/Operator, and sole (for now) employee of Healy Home Services. You need help with your home and I’m excited to provide it. I’ve been doing this kind of work with my Dad since I could hold a nail, although this is my first time launching out on my own I promise to be professional, responsive, honest, and do my best work. I’m excited to serve you! Thank you for reading, and I look forward to hearing from you!

Finished Deck
Pre-sealent
Response time30 mins
Response rate100%
Recommended by100%of homeowners
Empire Home Inspections, LLC
New to Angi
Indoor Air Quality TestingMold & Toxic Material Test

Serving Keystone, SD and surrounding areas

In business since 2022

Free estimates

Credit card accepted

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today! \n \n

Garrison General Handyman Services
New to Angi
Dry-rot, Water or Pest Damage - Major Repair

Serving Keystone, SD and surrounding areas

In business since 2001

Free estimates

Small jobs welcome

We're a locally owned and operated company with over 22 years of industry experience. We value honesty and integrity in all aspects of our business. We offer a variety of Home Improvement services that are customizable to each individual project. We specialize in handyman/carpentry work and a variety of related service and repair projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction! \n \n

Response time1 day
Response rate90%
Mold Testing and Remediation FAQs, answered by experts

Mold and other fungi love moisture, so the best way to prevent mold growth after water damage is to remove as much moisture as possible. First, find the source of the water or moisture, such as a leak or clogged gutters, and correct the problem. Next, remove standing water, vacuum up puddles with a shop vacuum, and run blower fans and dehumidifiers for 24 to 72 hours. Once you've removed all traces of moisture, disinfect the area using either vinegar or bleach to kill any remaining mold spores.

Signs of mold under silicone caulk include discoloration or dark spots appearing through or around the caulk, a musty odor in the area, and visible growth on the surface of the caulk. Additionally, if the caulk feels soft or spongy, it could indicate moisture trapped underneath, which is a breeding ground for mold.

Water damage always poses a primary risk of mold and mildew, but growth is not guaranteed. Whether mold develops depends on several factors, including the severity of the water damage and how quickly the area is addressed. To prevent mold, you must act fast—ideally within the first 24 hours. The process involves cleaning up all standing water and thoroughly drying the affected area. If the damage is extensive, the cleanup was delayed, or you suspect mold might be present, it is safest to assume it has grown and contact a professional mold inspector or removal expert to assess the situation.

While the resistance of lime to mold is a hotly contested topic of debate, it is true that because it allows porous materials to breathe, it avoids trapping moisture close to the structure of a building. This breathability makes it less susceptible to mold than paint because it gathers less moisture.

Both an air purifier and a dehumidifier can help prevent future mold growth, but neither can remove existing mold. An air purifier will improve air quality and trap mold spores in the air, whereas a dehumidifier will reduce moisture in the environment. Keep in mind that you need to make sure your air purifier uses HEPA filters, which are rated for mold removal.

The Keystone, SD homeowners’ guide to mold testing and remediation services

From average costs to expert advice, get all the answers you need to get your job done.