When you said your cat knocked over your cricket house I was thinking of how I have 1500 in a bin with no lid on top of my roach bin (and also my curious cats). With 20-30 (lol), your cat will have a field day. My wife has 3 of the squish face cats - they're super low energy and don't even "play". But when it comes to crickets... they now them down!
Otherwise, prepare to find them in the most random of places. When we moved a while back my wife found them in a stack of bowls inside a china hutch! Also, many other places, lol. It happens, and it's why I phased crickets out for the most part. They are now a "treat" for my guys and gals. I haven't found them inside any food or anything in the pantry. No worries!