Termites

Walked into the office last night in a corner I saw a box termites feasted on :twisted: I found there tunnel treated it with bifen. Treated the room on the inside and out side now the question. Would you fill in the trench I dug around a 9X27 addition with dirt are gravel.

Its attached to a metal building my bad I had those drums sitting on plywood why I dunno it brought them right on into the addition...

My thinking is it would be EZ to treat once a year with bifen If I put gravel back in. I dug below the foundation and drilled holes about a food deep every 6"...

Or what would you do are apply...

Your first mistake is you slab is at ground level.
Your second mistake is you stacked things against the wall so you could not see the tunnel.
Your third mistake is you used bifen a repellent that the termites will avoid rather than a non repellent like Termidor.

Bifen is used for structures that do not have a infestation. You create a solid barrier around the whole structure that termites can smell and avoid. It is the old school train of thought. When used on current colonies it kills the ones you can get at but repels the others to find untreated areas.

Since you started with Bifen go ahead and use it. Dig a trench 6 inches deep around the entire structure. Mix the Bifen in a 5 gallon bucket and apply a 1/2 gallon per foot. If you get good coverage on the wall of the trench you can backfill the trench with dirt as the treatment last for several years.

Now you have a colony of termites trapped in the structure. Eliminate all water sources. Very hard to do in a metal building but try. The colony is going to try and find a new location to set up shop as they are repelled by the Bifen.
If the wall are closed in you can spray a foam in the wall void. If not just go after them with a non repellant spray.
Threw them moving into areas with a non repellant applied and dehydration from all water sources cut off the colony will die.

You could also add some bait stations outside the Bifen perimeter to reduce chances of a re-infestation.

Those two barrels have purple stuff in them I am tempted to flood that trench with it... The termites I found I sprayed them with PS they died

Were the box's were they got under the VCT Tile and lifted it. I pulled the tile up thinking the concrete cracked and they followed the crack inside, NO CRACK...

Why they got under the tile I dunno other than they liked the glue...

x2 on using Termidor. That's what my termite guy uses. He says it good for about 10 years.

Never have dirt against siding. Termites have dirt, mud tunnels, to travel in.

Termites don't like used motor oil. 50 years ago a I knew a man who was an engineer for a chemical company to make chloridane.. He claimed if you mixed a gallon of pure chloridane with 50 gallons of diesel fuel, it would remain in the ground forever.

Putting oil on the ground isn't a good thing to do. Before the EPA, people did whatever they needed to do to kill termites.

The pix are deceiving the metal siding has a lip on the bottom that held/caught rocks while I was digging its off the ground several inches. The slab has a knock in it the siding sits on.