Repair Opinions Please

[Cricket]

Would these 2 repairs be beneficial?
Thank you.

- Fuel injection and throttle body service (last done 2015)
- Spark plugs (never changed, originals)

2010 Mazda 3 GX
130,000 km

[S.F.W.]

Plugs would be beneficial. Injector service maybe.

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[G ~ MINI]

I agree ... Get new Sparks Plugs .
for injector i will usually do the Fuel system cleaner from LiquiMoly every year.
Since last was injector service was 2015 ... running the Fuel system cleaner in May and then June.
As for throttle body cleaning ... Is that the throttle and intake and intake valves cleaning ?

[Cricket]

As for throttle body cleaning ... Is that the throttle and intake and intake valves cleaning ?

I'm not sure, I'm a female with limited car knowledge.

Thank you all for your replies.
I have made an appointment to get the spark plugs changed.