Sorry if it sounds like a stupid question.

I have separated one from the pack and placed it next to a crowd of ants
And I have yet to see a single ant to climb into it, in fact they seems to be avoiding it… lol

That’s why I doubt, is there a special way to open the bait? I see no hints on the package

Here’s the instructions given:
1. Break Raid ® Ant Baits III apart from the plastic frame.
2. For thorough ant control, all four baits must be used at one time. For larger kitchens or particularly heavy infestations, we strongly recommend using additional baits.
3. For best results, place the baits next to the wall along baseboards, in corners, under sinks, in cabinets, and near plumbing fixtures. You can even place baits in cabinets. Do not contaminate feed, food products, or food preparation surfaces, dishes, kitchen utensils, and food containers.
4. Baits work best on horizontal surfaces touching corners and walls.
5. Ants will begin eating the bait immediately, and you should expect to see fewer ants within days.
6. Replace all baits every three months to keep ants from returning.