Rats can definitely cause damage, even if your car isn't sitting around for too long. It sounds like they've made themselves quite at home around your parking spot ! If you're looking for ways to deal with them, I've got a suggestion you might find helpful. Have you considered checking out
flea pest control methods? I know it might seem a bit unrelated, but trust me, those methods can work wonders for dealing with rats too. It's all about finding what works best for your situation, right? Anyway, hope that helps! Good luck getting those rats out of your car – and hopefully, out of your parking spot too.