Dealing with Palmetto Bugs in Florida: What Happens After Heavy Rain

October 16, 2024

Palmetto bugs, a common name for the American cockroach, are an inevitable part of life in Florida

These large, reddish-brown insects thrive in warm, humid environments and are notorious for their unwanted appearances in homes and businesses, especially after periods of heavy rain. While many Floridians are familiar with these pests, it’s important to understand how weather patterns, particularly excessive rainfall, affect their behavior and what can be done to keep them under control.

Why Do Palmetto Bugs Become More Active After Rain?

Palmetto bugs prefer moist, dark environments and typically live outdoors, but when heavy rains hit, their natural habitats—such as mulch beds, decaying plant matter, and storm drains—become waterlogged. The excess moisture forces them out of their hiding spots, often into homes, garages, and other dry areas.

Residual Puddling: After a storm, water often collects in low-lying areas, creating residual puddles. These puddles provide a breeding ground for palmetto bugs, offering both moisture and potential food sources. Additionally, standing water can make drainage systems more appealing to these pests, providing them with easy access points into homes.

What to Expect After Heavy Rain

  1. Increased Sightings Indoors: As palmetto bugs are displaced by rainwater, they often seek refuge in dry, sheltered areas—meaning your home. You may notice more sightings in bathrooms, kitchens, and basements where water and food sources are readily available.
  2. Higher Population Growth: The combination of moisture and food sources from residual puddling can accelerate the reproduction of palmetto bugs. Their eggs hatch faster in humid conditions, leading to a rapid increase in their numbers.
  3. Odor and Allergy Concerns: Palmetto bugs can carry bacteria and produce a musty odor that permeates homes where infestations are present. Some people are also allergic to the allergens they spread, which can aggravate conditions like asthma.

How to Prevent Palmetto Bug Infestations After Rain

While the weather is out of your control, there are steps you can take to reduce the chances of a palmetto bug invasion after heavy rain:

  1. Eliminate Standing Water: Make sure gutters are clean and direct water away from your home. Eliminate any standing water in your yard by filling in low spots where puddles collect. Pay attention to areas around air conditioning units and outdoor faucets where water can accumulate.
  2. Seal Entry Points: Inspect your home for cracks, holes, and gaps around windows, doors, and pipes. Use caulking or weather stripping to seal these areas to prevent bugs from entering.
  3. Keep Your Home Dry: Use dehumidifiers and proper ventilation in damp areas of your home like basements, bathrooms, and laundry rooms. Keeping these areas dry makes them less attractive to palmetto bugs.
  4. Regular Pest Control Services: Hiring a professional pest control service, like Pestguard, ensures that palmetto bugs don’t stand a chance. Treatments can help create a barrier around your home to keep these pests out, even after heavy rain.

Don’t Wait Until It’s Too Late – Act Now!


April 2, 2025
Protecting a Landmark: Pestguard Successfully Fumigates St. Petersburg High School March 2025 – St. Petersburg, FL Pestguard Commercial Services Inc., Florida’s premiere privately owned structural fumigation & pest control company, has successfully completed the comprehensive fumigation of St. Petersburg High School , a historic educational facility located in Pinellas County. The project, which began on March 17, 2025, was finalized on schedule, with zero complications, and achieved complete eradication of Drywood termites—preserving both the structural integrity and educational continuity of this iconic Florida landmark. A Building of Historic Significance Founded in 1898 and relocated to its current building in 1926, St. Petersburg High School is one of Florida’s oldest public high schools. Known for its Collegiate Gothic architecture and enduring presence in the community, the structure is not only functional but historically significant. As such, any restoration or pest management must be conducted with great precision and sensitivity. When school officials identified signs of termite damage in the building’s structural wood, they turned to Pestguard for a solution that could both eradicate the infestation and safeguard the building’s legacy. Pestguard was selected for its 32+ years of industry experience , reputation for thoroughness, and commitment to safety and accountability. Preparing for a Full-Structure Fumigation The project began with a detailed site assessment , during which Pestguard’s licensed fumigation team conducted visual inspections, identified potential points of ingress, and worked closely with school administrators to plan for a safe and efficient process. Given the age and architectural features of the school, extra care was taken to ensure structural sealing and gas containment would be effective. Pestguard’s in-house team, not subcontractors, handled every aspect of the job—from pre-fumigation planning to tenting and execution. This eliminates communication gaps and ensures every technician on-site is fully accountable to Pestguard’s standards. Execution and Real-Time Monitoring On March 17, Pestguard began the full-structure fumigation process using Sulfuryl Fluoride , a trusted fumigant known for its effectiveness in eliminating Drywood termites without leaving residue. What set this project apart was Pestguard’s use of continuous gas level monitoring technology. Specialized equipment tracked the concentration of fumigant in real time, allowing technicians to ensure consistent levels were maintained throughout the treatment window. Most notably, Pestguard achieved 200% of the required fumigant exposure threshold —a benchmark that guarantees complete eradication of active Drywood termite colonies. Safety First: No Compromises The health and safety of students, faculty, and maintenance staff were top priorities throughout the project. Pestguard implemented strict re-entry protocols in accordance with all Florida Department of Agriculture and Consumer Services (FDACS) regulations. Clearance testing was conducted before the structure was reopened, ensuring no fumigant remained. Because Pestguard does not use subcontractors, its team maintained complete oversight over every phase of the project, from crane and man lift operations, tent installation and fumigant release to monitoring and final clearance.  A Milestone in Commercial Fumigation “We are honored to have been chosen for this important project,” said Roger Mensing , President of Pestguard. “St. Petersburg High School is not just a school—it’s a community landmark. Our team approached this job with the respect, care, and attention it deserved. Completing the project on schedule, with no complications and full termite elimination, is something we’re incredibly proud of.” Why Pestguard? 32+ years of experience in structural fumigation No subcontractors —in-house professionals ensure accountability Precision monitoring using real-time gas level tracking Proven safety protocols in compliance with all regulations Trusted by schools, government buildings, and commercial facilities This project reaffirms Pestguard’s position as a leader in Florida’s pest control industry, delivering scientifically backed, expertly executed treatments to protect properties of all types—from private homes to public landmarks. Learn more about Pestguard’s fumigation capabilities at pestguardtermite.com or call 941-358-3863.
December 24, 2024
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October 18, 2024
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September 5, 2024
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