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Having lived in Northern Iowa my entire life, I am way too familiar with mosquitos and other annoying insects in and around my RV. Nothing is more annoying than the buzz of a flying insect in the middle of the night! Aside from harsh chemicals and nasty traps, there are some things you can do to keep them out of your rig and some safe and natural deterrents.
Check and seal all slide-outs.
Almost every RV has at least one slideout and this is a very easy entrance point for all types of insects. When the room is extended, check around the entire perimeter as there are often gaps at the top or especially lower corners. Verify the seals are in good condition, not torn, and not pulled away from the flange. Even with good seals, there may be gaps that need to be filled with temporary foam insulation or even a swim noodle cut down.
Check all entrance areas such as windows, doors, and roof vents.
It is not uncommon to have slight gaps in screen doors, especially where the notch for the deadbolt on the entrance frame is al. Check around the edge, especially in the corners and on the floor. Make sure the screen is in good condition with no holes or tears. Do the same with the window screens and the roof vents. Most appliances with outside access such as the furnace, water heater, and the roof air conditioners are enclosed enough to keep insects out however it wouldn’t hurt to pull off the cover and make sure the evaporator cover is tight. This is a shot of removing the evaporator cover from an older unit. If there are any gaps, use HVAC silver tape to cover them up.
Also, pull off the outside refrigerator vent cover and inspect the compartment to verify there are no gaps for access to the inside.
Keep your doors and windows shut.
This may seem like a fairly elementary point however most RVers don’t realize how often they go in and out of their rig leaving the screen door open for a very short time, especially when grilling outside or tailgating. Running in to get a cold one could let in enough flying pests to ruin an evening. If you do need to go in and out frequently, take a look at an awning screen room. This will allow you to enjoy the patio area of your rig, go in and out as you please, and keep the pests out. Just make sure all the edges are tight against the awning frames and the RV. Check out the tips for essential oils that can be used in these areas below.
Stay away from water and don’t let standing water around your rig.
Water is a breeding ground for mosquitoes, mayflies, and other annoying flying pests. The farther away from water the better however that is not always easy to do. The more you can clean up stagnant water around your campsite the better such as fire pits and low spots. According to the CDC female mosquitos lay eggs in water and the eggs can hatch into larvae within 2 days and into full-fledged flying pests in 5 days.
If you come across standing water or can’t get rid of it, there are options to kill the eggs and larvae naturally. Several companies sell a Mosquito Dunk which is a natural product made with BTI that will kill the larvae within 24 hours.
Adding a few drops of dish soap to the water will kill not only the larvae but any adult mosquito that lands on the water. Adult mosquitos can stand on top of water due to the tension strength of the surface. The soap weakens that strength and the adult mosquito sinks and drowns and also suffocates the eggs and larvae. Another option is to use a few drops of cinnamon oil which will not only kill the larvae but also is a great deterrent.
Keep the RV and campsite clean.
Flies are attracted to smells from decaying food in garbage, fermentation from soda or beer, and sewage. Mosquitos are attracted to Carbon Dioxide which is emitted by humans, lactating, body heat, dark clothing, and uric acid which would be mostly from pets. Keep your campsite clean, get rid of the garbage often, and walk your pet to another area to tinkle! I’m not sure about the dark clothes but it is worth some research.
Try these popular deterrents
- Wind: Mosquitoes are lightweight and any amount of wind will blow them around and hamper their ability to fly, so run a fan to keep them from your area. However, this most likely won’t keep them from coming inside.
- Insect repellent: There are several good sprays that you could use on the seals around the slide rooms, screens, and doors. Some have DEET, while others are all natural.
- Natural scents: Mosquitoes do not like citronella, cinnamon, peppermint, spearmint, and other mint scents. Some RVers have used lavender, catnip, cedar, and even garlic.
- Smoke: A campfire with a little bit of smoke is a great deterrent if you like the smell of smoke lingering for a long time. Unfortunately, no matter where I sit around the campfire, the smoke follows me!
- Use Thermacell: I ran into a product years ago that is one of the best mosquito deterrents I have found. Thermacell is available in a portable belt pack version for hiking, a lantern for around the campsite, or the Thermacell Patio Shield available on Amazon.
The butane cartridge heats the pads and there is very little heat and no smell and works well.
- Reduce carbon dioxide (CO2): Our bodies give off CO2, and that attracts mosquitoes. Proper ventilation, as well as wearing proper clothing, will reduce the smell of CO2. Wash your face and arms periodically. An old-school option is two teaspoons of vanilla extract with a cup of water in a spray bottle, which is almost as fun as a video game!
- Camp in cooler weather: Mosquitoes are inactive in temperatures below 50 degrees. Maybe it’s not the most ideal camping conditions, but worth the note.
About the author: Dave Solberg: Managing Editor, RV Repair Club
For the last 25 years, Dave has conducted RV maintenance and safety seminars, developed dealer and owner training programs, written RV safety and handyman articles authored an RV handbook reference guide, and logged over 100,000 miles on the road in an RV.
RV Repair Club is your go-to online resource for enthusiasts who want quality RV maintenance, repair, and upgrade information – a community where passionate RVers can come together to gather knowledge and share their experiences.
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