If they're in the kitchen then they might be pantry moths. We had an infestation a few years ago.
Pantry moths live and reproduce in food packets, particularly dry ingredients which come in paper or cardboard packaging. Bags of flour, boxes of teabags, cereal boxes, stuff like that.
Unfortunately you need to get everything out and go through it with a fine tooth comb. Almost literally, it is quite like checking your children's hair for nits. The moths are easy to spot, but what you are looking for are the larvae, which are like small, transparent maggoty things. I found them mainly in the creases of paper packets, like where the glue is on a previously sealed packet of flour. They're not that easy to spot.
We ended up basically throwing away a lot of stuff that was open, and then getting some plastic boxes with properly tight kids to keep unopened packets in.
I then went to IKEA and bought a load of big mason jars, the ones with the proper seals and the lever mechanism to open them. We now fill those with dry ingredients like flour, sugar, rice, pasta, tea bags, cereal etc and throw the packaging away.
Once you've done your inspection and got rid of any food where you find larvae, or anything that looks a bit dodgy, give the whole area a proper clean and spray it with vinegar, and only put back sealed packets and things you've decanted into proper containers.