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Step 6: P.s.

It's been a couple weeks now since I put these in all the cars and it seems to have worked to a certain extent. The moth balls disintegrate more quickly in the cars that get used more often so this design would be better for a car that is mostly just sitting.
Also, I noticed that is says on the box not to breathe the fumes. I don't know how dangerous it could be but the smell is pretty strong and you probably don't want to be breathing it all the time. As long as the A/C or fan is not on while driving there should not be too much getting into the cabin.
I can tell you from first hand experience of working in my family's pest control company that has been in business for 60+ years that moth balls have no effect on rats. If you want to try to keep mice away use mint oil on a cotton ball and replace it every 2-4 weeks. Not sure if rats will avoid the smell of mint. This is only a deterrent! If it always worked or if moth balls worked we would have been out of business a while ago. (P.S. I'm not saying its impossible for a rat to dislike the smell but on the whole don't count on this to work).
Thanks for the input. After posting I found out that moth balls last an extremely short amount of time, and I have since switched to dryer sheets, but you are definitely right about anything only being a deterrent. I will try the mint idea next, if I can find it, as I am still finding evidence of the presence of rats in my engine compartment.<br>I think the concept still holds though, it anyone wants to try putting something in the engine bay of their car it should be secured so it won't get loose and cause damage.
NP. If your are looking for a physical barrier try copper mesh for a small area. Steel wool won't do anything but copper mesh will as it doesn't rust and they don't even like the taste. Try the Rat Zapper 2000 if you are looking for a reliable, effective and humane trap (it stuns and kills RATS in about 2 minutes, mice are instantly killed). Also don't keep any food around or give them a reason to be there. GL.
<p>A GREAT way to make yourself really, really sick- the smell will come in the vents. DUMB idea. One we have used here in the Great Smokys of NC, in the boonie areas out of town where the mice think a vehicle is their own private apartment is https://www.amazon.com/Fresh-Cab-Botanical-Plant-Based-Repellent/dp/B00KX7CCXS We've used it for four years now, with no more chewing of wires, getting into the air system, or coming inside to chew everything they can and make nests. One bag goes into the glove compartment, one into the center of the air cleaner, and two up next to the firewall. 96 Suzuki Sidekick and 2010 Caddy SRX. Previously, we had lots of damage. Our neighbors still do. Replace once a year. If you live out west, where the rodents can be especially bad, try this one- you will have to run a cord out, so may have to hunt a battery operated device, instead (remember to remove that, every day, from under the hood as it is not waterproof-a PITA worse than running a cord for the other) https://www.amazon.com/Cravegreens-Ultrasonic-Repellent-Electronic-Cockroach/dp/B01734NZNY/ref=pd_lpo_86_bs_tr_t_1?ie=UTF8&amp;psc=1&amp;refRID=WQFK1B4VS6B0XTQHE31S . These devices have come a long way since their inception, and use varying pitches, so the creatures don't get used to them. We have used them successfully in our basement for mice, and on our A frame roofed deck, which has no screening, and was becoming a home for bats pooping all over the walls and floor. Nary a bat for three years now, and strangely, we used to have a horrible spider problem all over the ceiling- a PITA to clean at 18 feet high- but since using this, have none. No sprays used at all. Whatever you choose, I hope your problems are solved. All what I have written are from experience, not reading reviews of others.</p>
<p>Avoid using mothballs in any occupied space where you can smell them. Mothballs are usually made of paradichlorobenzene (1,4 dichlorobenzene), a substance that damages heart muscle.</p>
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Hi, <br>We had a similar expensive summer of chewed wiring and have since gone to filling knee-high nylons (Walgreens sells them for $1 for 2 pr.=4 tubes) with mothballs, then knot or tie the tops and lay across engine anywhere there are wires or flat spots where they previously left their calling cards. No more damage for months now. Downside is you have to take them off before driving. We just pop them in a bucket next to car and replace them after we return home (after letting engine cool for a few minutes). Yes its a bother, but it only takes a moment to put them on and off, with the added benefit of not having to smell them while we drive. We also learned to leave a pair of gloves with bucket so WE don't smell of mothballs (smell is hard to wash off your skin!) Hope this idea helps someone out there :D
I just found out that peppermint works very well. I have the herb growing all around my house to see where it will grow best. It can be dug up easily and moved around. Once you get a good crop, maybe a paper shopping bag full of leaves and some stems, you are ready! I crumbled some leaves around some peanut butter bated snap traps and the mice never touched them! They did go after the ones with no peppermint nearby. So it works! I read that the mint distorts their very sensitive sense of smell. The mice are not talking. But it makes sense. Try it. I used old pantyhose and tied bags under my car hoods, in car glove boxes, under seats. It smells nice too. So far no mice!
Oh, I forgot, the mint herb family is a Perenial and can be planted in tubs and containers too. Mine dies back each fall and then grows back in early spring. Get some small plants and they will spread quickly. Take small clumps with roots and soil and plant in places around your home. It will grow just about anywhere. Enjoy!
MOTH BALLS DON'T WORK! Try electronic pulsing devices made for bug and mice . I have them in my closets and garage. They have been working for 5 years! You must move them around every month or so, or the little beasties will get used to them and ignore them! I put mine on small extension cords and just move them at my leisure ! Add some snap traps, poison bait and the population will decrease! Works for me!
They may work for engine compartments, but i can tell you now that they absolutely do NOT work in the attic. I dunno maybe the heat from the engine has something to do with it.
Also, you can spray Rataway Fragrance non-toxc &amp; non-poisonous to protect car engines and wiring. Use to protect cars, trucks, farm machinery, homes, business,etc... safe around pets &amp; children
Very nice instructable! We had a mouse get into the engine of our RV this fall, $1500 in repairs later, I also decided to try mothballs! My wife suggested using the plastic mesh bags that fruit comes in (like melons, etc). Other than that, we pretty much did the same as you... I hung my bags from hooks made from wire ties that come on bags of sandwich bread. I ended up with four bags around the compartment - that used up a box of moth balls.<br><br>We did notice that when we removed the bags to drive somewhere, that they were pretty strong smelling. I tried putting them into a ziplock bag, but we could STILL smell them! I think they will eventually get a mayonnaise jar for storage when not in the engine compartment.<br><br>Good job!

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