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Termites concrete walls.
Termites can get through a crack as narrow as the width of a business card.
This is why you may notice cracks when you look closely.
The ones that get in from the bottom subterranean termites live in the soil and enter the house to consume wood then return to their nest in the ground.
Subterranean termites live inside the soil and reach above ground level food sources via special tunnels that workers build of saliva mud and their feces.
Sometimes these imperfections can develop while newly poured concrete is drying.
Subterranean termite tubes are 1 4 to 1 inch in diameter.
If you suspect that you have termites inside your walls you first have to locate the area in which you think they are.
If the a part of the wall sounds hollow after you tap on it then this is likely a sign that termites have eaten away parts of the wooden interior of your wall.
Note hanging tunnel at left foreground measuring 3 below joist and void through joist near end at upper right.
Friday september 21 2018.
In crawl space termite tunnels on block foundation end end joist and hanging from floor joist.
Termites cannot digest concrete.
Determine where the termites are in the walls of your home.
I recomment to contact trackers first.
Concrete is extremely strong but it s not flexible.
Termites can infest a block house from the top or bottom depending on the species.
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Look for the othersigns of infestation by termites.
Other cracks can form when soil settles under a slab.
Side view of same location showing stalactites tubes on flue and vertically on concrete wall.
For a natural solution use boric acid or diatomaceous earth.
Walls can draw these nasty insects in case they are in direct contact with the ground soil.
Older concrete block houses are vulnerable to subterraneans because of a type of construction called block stemwall that was used until about the mid 1980s.
Tap on the walls with a screwdriver to determine where the infestation of termites is.
Can termites eat concrete.
Although wood is their preferred source of nutrition and what they are well known for eating termites have also been known to eat drywall foam plastics and even thin lead and copper cheeting materials especially when it s in the way of them getting to wood.
Listen for a hollow sound as you tap with a screwdriver then explore the tree by clicking with the screwdriver to visibly observe termite activity.
Use a manual duster to spray the boric acid or diatomaceous earth into termite infested wood cracks crevices and holes inside and outside of your home.
You can figure this out by tapping on the walls of your home.
However subterranean termite tubes also may be hidden in typically inaccessible places such as inside walls crawlspaces cracks in the foundation or behind baseboards.
The short answer is no.