Recommended Treatment of Crawlspace Construction
Imagine that this house has a single brick foundation wall, concrete driveway, concrete attached slab and eighteen 16"x8" block piers.
TRIP 1
Treat inside foundation wall and piers.
Inside foundation wall 30'+50'+40'+20'+10'+10'+20'=180 linear feet treated at 4 gallons per 10 linear feet = 72 gallons.
18 piers treated at about 2 gallons per pier = 36 gallons.
Note: The gallon approximation is derived from treating the inside 16" masonry void at 2 gallons per 10 linear feet and the soil adjacent to the pier (16"+16"+8"+8") at a rate of 4 gallons per 10 linear feet: This equals 1.86 gallons or approximately 2 gallons.
TRIP 2
Treat garage slab and attached porch.
Attached slab - 24 feet of expansion joint at 4 gallons per 10 linear feet = 9.6 gallons.
Garage slab - 20'x20' = 400 square feet at 1 gallon per 10 square feet = 40 gallons.
Garage expansion joint = $ 20' + 20' + 20' = 60 $ linear feet at 4 gallons per 10 linear feet = 24 gallons.
TRIP 3
Treat soil adjacent to outside foundation wall after all landscaping activities are complete.
A. 176 linear feet at 4 gallons per 10 linear feet = 70.4 gallons.
TOTAL FOR JOB = 252 GALLONS.
PRETREAT CHECKLIST
✓ Make sure the company hired to do the pest control work has a valid business license issued by the Maryland Department of Agriculture (MDA).
This example is based on the most common practice for treating crawlspace homes. However, it is recommended that only the masonry voids be treated at this point in construction. The soil adjacent to the walls and piers need to be treated at a later point in construction. This would prevent disturbance of treated soil by workers during construction and prevent unnecessary pesticide exposure to workers on site.
✓ Make sure the technician performing the pretreatment has a valid employee identification card issued by MDA.
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✓ The company vehicle should be clearly marked with the company name and MDA business license number. ✓ Be familiar with the terms and conditions of the pre-treat contract.
✓ Be familiar with the terms and conditions of the pre-treat contract.
The company must provide the customer with the name of licensee, MDA pesticide business license number, National Poison Center phone number, common name of pesticide or active ingredient applied and an original copy of the product label or portion of the label containing precautionary statements regarding hazards to humans or animals, environmental hazards and post application information.
During the construction phase, up to and including final grading, it is critical that the builder and PMP maintain timely communications. PMP's need adequate notice in order to ensure proper soil treatments around foundations, walls, piers, under slabs, etc.
Proper Application of Pre-Construction Termite Treatments
A Guide for Builders, Pest Management Professionals and Homeowners
✓ Be aware of soil conditions at the job site. Liquid termiticide labels prohibit the application of the product if soils are frozen or saturated.
For more information, please contact the Maryland Department of Agriculture, Pesticide Regulation Section at: 410-841-5710.
MARYLAND DEPARTMENT OF AGRICULTURE PESTICIDE REGULATION SECTION
Aruna Miller Lt. Governor
50 HARRY S TRUMAN PARKWAY ANNAPOLIS, MD 21401
MARYLAND DEPARTMENT OF AGRICULTURE Kevin Atticks Steve Connelly Secretary Deputy Secretary Phone: 410-841-5710 Fax: 410-841-2765 pest.reg@maryland.gov
02/25 KL Pub. No.: MDA 14-01-06