WD40 for pest control.
CARPENTER ANTS...nasty, big, crunchy ants that burrow in your home essentially disintegrating wood, usually important support beams, to create "galleries" (nurseries, food storage, living space), they don't actually eat the wood, just excavate! So, as much as I am against killing inconvenient animals/birds/pests, this is one that is exempt from any form of live and let live.
The solutions are primarily horrific pest control products that are toxic, dangerous to pets and livestock and often frightfully expensive.
Borax (boric acid), yes, is great, assuming you do not have dogs or other animals that will be attracted to the sweet bait - borax is toxic to dogs (and most likely other animals) and it gets mixed something like three tables
spoons in a cup of sugar
water solution (like humming bird sugar water). Ants
feed on it and it kills them (ingested or inhaled it is toxic to everything, including humans, in sufficient quantities it damages multiple systems internally and yes, can be fatal if intoxication is severe
enough). This is what most over the counter ant bait type products are based on.
My new friend, although it may not exactly be environmentally friendly, is good old
WD40. Yes, it is a
petroleum based product (no, contrary to many beliefs it is NOT made from fish oil - go look at the
WD40 website under myths), but dang, it does a number on carpenter ants. Due to a fire in our home (please put smoke detector in your attic! Any fire up there WILL NOT trigger smoke alarms within your home) we are currently in rental accommodations with 11 dogs, darned if I was going to have the landlord call in Pest company to spray who knows what where my dogs go, but killing literally hundreds and hundreds a day on a 3x8 foot deck/balcony that is the dogs only access to the yard was not
sustainable - one swat with flyswatter would kill 3-4 ants, ugh. So I watched the buggers, and pinpointed where they kept appearing from, stuck the
WD40 nozzle up there and sprayed up, down, in and around. After 2-3 applications each day, over two days it appears to have been very successful, I have only killed 10 all day!! Went down stairs to lower patio and discovered another swarm of hundreds, crushed them all leaving just a few to spy on, pinpointed their entrance and sprayed - four hours later and there is less than 10 anywhere within 20 feet.
I have also used this, at night, with nasty wasp nests - stuck it right in the holes and blasted away, next day, a few "crawlers" but no flyers and a bunch of dead on the ground beneath the nest.
I assume both the ants and wasps are potentially poisonous, so I sweep up and burn all the victims, and now the actual wasp nest is dead, it is safe to knock it down and add to the burn pile. The carpenter ant nests are in the walls - they can stay there and rot...
PS: it also, apparently works on most bugs I discovered when I "googled" it, including carpenter
bees (I assume that is wood
bees), but I hate the though of killing anything that is so good for pollination. If you fear they are doing serious damage to the logs, then you have no choice, structural integrity must come before pretty much everything else.