If you bought one kilo of DE what's not "uncalcinated" and does not work.
Then try this: catch the ant and squeeze his throat with your nails so he get short of breath and opens his mouth. Then dump some DE in his throat so he suffocates.
Now you will say, if I squeeze a bit more he will be dead too; but then what the hell will you do with your kilo of DE ?

 

What is 'Polaris' and what do they sell? I saw on an internet search an electrical store but I know here that stores sell things which seem outside their core business.

 

Polaris does sell a lot of electrical supplies but also pool equipment, plumbing, air-conditioning and lighting fixtures.
Most of the things they sell are good quality by local standards.

 

Where can the Terro Ant Killer be bought?

 

The hardware store in Robinsons mall, when it is in stock, which is rare.

 

Terro 1 oz Liquid Ant Killer ll T100 | Lazada PH

https://www.lazada.com.ph/-i127904835-s137145354.html?spm=a2o4l.order_list.detail_image..47253e17AoX2Zq&urlFlag=true&mp=1

 

That's the stuff alright, but at 741P + 121P delivery the price there is nuts. In Robinsons it is under 500 pesos when it is in stock

 

The Terro is indeed very effective. It's just boric acid and sugar.
Sadly, as of this week Lazada changed their shipping policies. Shipping fees are now p1006!
Some stores still offer free shipping if you spend a minimum amount. I reckon they will be losing quite a few customers. I will no longer order from them.

 

For me less than 7 bucks US wont break the bank. I'm more than happy to spend 7 bucks more than a place that has no stock, have it delivered to my door and have no ants crawling all over my house and food.