Rat issue?

I have tried multiple rodent deterrents with very little success. The rodent tape sometimes works, but it's expensive and I have watched mice chew it apart without slowing down. The big culprit is that many vehicles use a soy-based plastic for the insulation on the wires, so basically, they think the insulation is tasty food. Then modern cars have a lot of panels and covers they can hide under and that allows them to feel safe while they do whatever they wish. It also doesn't take them long to set up house, I've seen cars parked and less than 6 hours later I've seen mice around them. Good luck with the mint, hope it works for you.

As I said in the earlier post you had, there isn't a lot that you can do if you don't have a sealed location to park it in. If it is being parked in a typical driveway there isn't much beyond traps and poisons that really work. I know you don't like those, but they work. You might be lucky and have rodents you dislike mint. I grow mint myself and have watched mice setting in the patches of mint and eating it. If you come up with something that actually works for a long time you could become a millionaire. Rodents cause a lot of damage every year.

There is no permanent solution other than removing the rodents. The tape Honda 4019-2317 somewhat works, but it depends on what rodents are the problem. Some don't have the correct receptors to stop them from eating it. That is why it is only sold as a deterrent that may help. There used to be a store online that was direct from the company that made it but Honda stopped them. The issue I have with it is that a lot of vehicle makes and models have this problem, but only Honda sells the tape. If it was known to work I would expect a lot of other companies selling the same type of tape.

The cayenne only works if they eat it. Doubt that powdered has any effect. Up here it's mice, rats, chipmunks, squirrels and the occasional possum. Those are more fun because they all have different deterrents, most of which don't work.

As I've stated multiple times, I have never found anything that really works. That is why there are 1000's of products out there and tons of internet claims that "This really works" with 50 people then saying it doesn't. That is why there are oils, sprays, and electronic gadgets all claiming to work, but they cannot show proof. The only thing I know that 100 percent works is to eliminate the rodent, if they are not around they cannot do damage. The other is to block off all access to the vehicle with something the rodents cannot chew or dig through and cannot climb over. The issue with the second method is that it has to be something that is easy to do or a permanent install or it won't be done every time. One of my friends owns a farm out west and several classic cars. His solution was to buy parking lifts for the classics, Those are 4 post lifts, drive on, elevate the car and they are safe from pretty much any rodents because the posts are smooth steel. His garage where he parks his daily driver is "armored". 6" thick concrete slab, the walls are metal siding with a wide strip of steel that is buried around the slab and goes 2 feet up the walls, with the metal siding over that. The door is one of the old style insulated panels but it has a strip of steel on the outside that is floating so that when the door is closed it lays on the concrete. That keeps out the rodents and in his case snakes as well.