I love my cat. One month after I adopted her and brought her home, the entire rat infestation is gone, zero mice, it’s been like 2 years since, I still haven’t seen any mice.
My primary reason was for companionship, but second reason to get a cat is hoping to get rid of all the mice, and it worked! Sadly the roach problems are still here… cats don’t really deal with roaches… 😓
I once had a beagle that was a voracious insect killer. She would play with spiders, cockroaches, ants, etc. the same way people talk about cats playing with mice. Eventually, she would always make a mistake of pressing too hard when trapping the insect and pulling it back, and we’d have another little squish spot by the back door that needed to be cleaned.