Should I use this?

This is one of the first tequilas I have ever bought. Now I have an infusing kit that has these little pre-made infusing bottles. And one is specifically made for tequila.

The thing is though I never liked this tequila and with how old it is I am distrusting to put it in the infusing bottle

What should I do? should I just pour it down the drain? Or use it in a margarita and be done with it? Or try it in the infusing bottle? (I have a nearly full bottle of triple sec I have also had for nearly as long, so some advice on that would also be good.).