I feed my skinks and dragons in their enclosures & tub , and sometime a really speedy cricket gets away and hides (to come out after the lights go out).
That's the time to recover these little rogues , or simply do what I have been doing for a long time, leave the salad in the tank/tub overnight, the crickets are going to go to that every time to have a nibble and get
hydrated, and will likely be discovered there or nearby by the lizard when it wakes up / warms up and discovers its hungry. Result, very rarely any rogue crickets from the previous day still alive when I get up (and usually the salad is nearly all gone).
Never had a lizard present next day with an insect bite on it.
Regarding rogue crickets in the house - I regularly loose a few when my bulk order arrives while I'm transferring them to keepers holding 80 - 100 crickets each , and when I'm refreshing the carrot chunks and topping up the pellets, and when I'm checking for dead or sick crickets and collecting those that are due for use in a meal.
Often they disappear before I can recatch them, showing up that night or over then few days at night and crawling about on the floor, those are the few that resident wild house skink doesn't catch and eat ( we usually have a wild eastern water skink in residence in the warmer months who is great house pest controller , cricket catcher and spider catcher and eats all the insects she catches - only evidence she leaves is an occasion wing or leg on the carpet or lino floor. She is also great mouser ( when she's in residence the house mice vanish either because they sense a predator is present or she follows them to their nests and eat's their babies (she can do this because she can go anywhere they can and so they can't elude her by hiding under / behind cabinetry or in walls.).
Having a few rogue crickets in the house is a given if you are using crickets as feeder. They are no issue and wont infest the house like roaches will if they escape.
I quite like the sound crickets churping too.