The Termidor Foam is definitely an amazing product and does well to transfer. That being said, you would have to drill holes into the cabinets to inject it into the galleries the termites have created for it to expand through their tunnels and reach them. Honestly, we have many customers in the Bahamas that use our products (they have them shipped through freight forwarders) and its very common for you to have a variety of termites in your area that could have flown in from the outside and infested the cabinets. The only downside to the cabinets themselves is if they weren't pretreated before being assembled/stained from the people you purchased them from. If there were termites in them when they came from the manufacturer, the likely hood of them being in there this whole time with no signs of damage or kick out holes and dust until 2 years out is extremely slim. Cabinets aren't that thick compared to beams and supports of the structures of homes which can cause finding termite damage and activity signs to be less noticeable for longer. Normally activity would show up not long after you received the cabinets if they came infested. Now, if it's powder post beetles they could have been in the raw wood without you or even the cabinet company knowing they were there. Powder post beetle larvae can stay dormant up to 20 years sometimes in the wood and then emerge. If that is what you have, your best mode of action would be to have your home tented/fumigated to kill them all at once. Termidor Foam won't work for you in that case and the products we have that would work would require you sand your custom cabinets down to raw wood and then apply them. This is a tough situation for you but fumigation is almost your only option.
If there is no insulation in the wall then there's not many reasons for them to be in that wall void as the insulation would provide an area to nest. They may travel behind the wall voids but the main nest will not be behind it. They will most likely be using the studs as a food source and traveling up the sides of the studs. You will not foam the entire void, rather you will drill a hole close to the top of the ceiling/stud on either side of the stud. Once the holes are in place on each side, inject the foam into each hole for 5-10 seconds, allowing the foam to expand but slide down the sides of the studs where they would travel. If you are seeing them along the baseboard areas, drill holes every 8-10 inches apart across the area between studs, about an inch or 2 above the baseboard. Use the same injection rate for each hole and let dry. The Termidor Foam has some residual for about a month after it dissipates so if any are missed in the initial application the rest of the colony should be affected.
Termidor Foam and Premise Foam have two different active ingredients. Because of its active ingredient, imidacloprid, Premise Foam works differently from other termiticides which repel, rather than kill, termites. Termites tunneling or foraging in the spaces treated with Premise Foam will go about their usual activities without being repelled. The exposed termites then remain unaffected for a few days, before sudden death occurs. In the meantime, the exposed termites are able to spread the Premise chemical to unexposed termites by physical contact when they feed or groom the other termites, resulting in a domino death effect which wipes out more of the colony. Termites who contact Termidor Foam transfer it to every other termite they in turn contact, in a unique process called the "Transfer Effect." And because Termidor is engineered to be slow-acting, termites have ample time to spread it throughout their entire termite population.
They are both effective products that will work to combat termites if you are treating the area directly.
Termidor Foam should have a shelf life of about 1-2 years.
You can kill the termites yourself! The easiest and most efficient way would be to use Termidor Foam.
There is no applicator necessary to apply Termidor FOAM. The bendable straw that is attached to the can itself is all you need to apply the product. No actuator required.
Termidor FOAM will expand at a ratio of about 30:1, so each 20 ounce can will create about 20 quarts of foam, covering approximately 1,155 cubic inches.
The Termidor Foam residual lasts approximately 4 – 6 weeks. Termidor foam begins working immediately, however using a product that is non-repellent (or not detectable) will allow the termites to pick up the product on their bodies and transfer it to other termites within the colony. It can take up to 90 days to eliminate the existing termites.
We would not recommend applying this product while pets and/or children are indoors. Once the Termidor Foam has dried on the surfaces behind the wall it will only be toxic to something the size of an insect or termite. Once the product has dried completely, it is safe for pets to return to the area.