Yes, if you are not interested if it will work or not. DIY is good for things that are not important. When it comes to things like the integrity of my house, I defer to specialists who have years of experience. Like this winter, I had a raccoon which took over my cat's home outside. Instead of getting scratched and bitten, I hired a professional who did a fantastic job and got rid of the sick animal. Once the termites are eradicated by a professional then you can spray every year as I do to keep them away. But for the original infestation, I want someone who knows what they are doing. There is an old saying Penny wise and Pound Foolish meaning trying to save a buck may lose you your house. Is it really worth it?

It depends on how much knowledge you have about termites? Using chemical is 1/4 of what it takes to get rid of termites. Understanding the conditions conducive to the times is the 3/4

Yes you can. Go to a hardware store or a termite exterminating co many of them will sell you the chemicals. You dont need any licensing to buy or use them.

house needs to be tented

I found a termite colony in the early mid stages in some MDF wall board. I have heard over and over again, that "I" cannot buy the stuff the pros use. Upon calling out the pros & looking at their arsenal of chemicals, every single chemical they mentioned to me was available on line to the public. Then they said "You don't have a slab injector, & you will never get a half gallon per foot of XYZ chemical into the holes". I used a rotary hammer, 18" long 1/2" drill bit and a 40" clay drill water injector I used when I drove ground rods as as an electrician. I put together a home made chemical mixture injector & had no issues at all getting 2 gallons of water into the slab holes with zero problems. I only need 4/10 gallon per hole. I have the field guide for pest control. Do I really need to hire a pro, and why? I will need a foamer for the small area indoors that we found the termites in, near a water leak. I found the critters while fixing the leak. I have used Timbor & similar wood treatments on furniture & vintage, as well as new wooden cabinets in the past with great success. If I can obtain regulated R12, I somehow doubt finding highly regulated insecticides is very hard either. Most ALL of the insecticides that were really dangerous were outlawed some years ago, and what is left is sold on line to anyone. I need to hit some more wood with the insecticide fungicide anyway, when I fix the area under where our new roof leaked, so buying extra foamer & Timbor is no big deal.