For years, we used petroleum based rustproofing like this, It also worked pretty well in keeping rodents from chewing the wiring. They just hate the taste of oil based petroleum products. Still, we will see chewed up acorn residue from the oak tree on our lot. In 2018 we purchased this product from Amazon and sprayed it all over the engine compartment. In 2019, the expected acorn shell residue was not there at all. So, we sprayed it again with rodent repellent. After letting it dry, we sprayed some rustproofing on top of it. Yesterday, we examined the engine compartment under the hood and found absolutely no evidence of rodents. For added measure, we sprayed the area again with rodent repellent. I am now convinced that this system really works.
Does it come in 5 gallon containers?! I for one, have never heard of a spray rodent repellent, it sounds like an excellent possible scammer product, but I will consider it. Anyone else??? After recently mouse proofing my '13 PIP, I am certain as can be I have at least blocked their access into the glove box and inner cabin. And I also have been using an ultrasonic noise maker thingie, purported to annoy the hell out of them. BUT....just the other day, I opened the hood, and saw a large nest on the engine! I cleaned it out, and then remembered I had some vole and gopher poison, (that is non injurious to my cat, just in case) and sprinkled some of it on top the engine and other places, hopefully for them to eat. The next day I noticed it was all gone, but am not sure if engine heat or movement did it. I am going to make a point to open the hood more often, a couple of times a week and overnight, and placing the noise maker directly where they built their nest.
That might be because of a "blocker" setting on your browser. If I was a manufacturer, I'd consider making and marketing a petroleum rustproofing infused with rodent deterrent oils mixed in. That way, it would last a lot longer on the car.
