Weevils are insect pests with between 50,000 and 200,000 species. These little beetles can easily invade cupboards and are not easy to get rid of. Fortunately, there are natural ways to keep them from invading the kitchen and get rid of them once and for all.
Getting rid of weevils
Very invasive, weevils can storm cupboards and feed mainly on cereals such as rice or wheat. They are considered pests. To get rid of it, two possible solutions:
- By cold: if the invasion is reduced, it is enough to put the infested package in the freezer at a temperature of – 10 ° C for three days, then to let it thaw before putting it back in the cupboard;
- By heat: for crushed or powdered cereals, put them in the oven at 60 ° C for 15 minutes and let them cool before storing.
If the invasion is more extensive, it is best to:
- Dispose of all infested packages in a tightly closed garbage bag;
- Take the bag out of the house immediately;
- Skip vacuum insisting well in the corners.
If this solution is not enough, it is better to call an exterminator.
Scare away weevils
Many plants are proven to keep weevils away from cupboards: rosemary, cloves, bay leaves, garlic cloves, and black pepper seeds. To do this, just put a few bay leaves in the boxes where the flour, wheat, rice, cereals, or other seeds are.
Kill weevils in seeds
On returning from the supermarket, seeds contaminated by weevils sometimes end up in the cupboards. These small pests must be killed before the females lay and the eggs hatch to avoid an infestation.
For whole grains like rice, here’s how to go about it:
- Put the seeds in a colander and run them under running water while stirring with a spoon to wash them well;
- Preheat the oven to 60 ° C;
- Put the cereal in the oven for about 15 minutes to kill the eggs and dry them;
- Let cool before putting them away.
The cold is more effective to kill weevils in grain powder or crushed. Freeze them for 3 days before transferring them to a container with a tight-fitting lid, then putting them in the cupboards.
How to prevent and treat a cupboard weevil infestation?
The weevils lay their eggs in cereals. The larvae develop and feed before emerging from the nest as adults. The laying takes place in several nests that are difficult to detect. To avoid the spread, here are some tips:
- Do not leave crumbs or leftover food lying around in the cupboards (flour, cereals, rice, quinoa, pasta, oatmeal, corn, barley, etc.);
- Close the buffet door;
- Clean the shelves;
- Every 2 or 3 months, take out the contents of the cupboards and vacuum;
- Rinse contaminated containers with hot water and soap to get rid of eggs and larvae that may have clung to them;
- Replace the paper used to protect the shelves, as weevils can hide in them. Discard the old paper immediately to remove eggs and larvae. Finally, you have to vacuum before putting the new paper.
- Since weevils can also take up residence in other corners of the kitchen than cereal cupboards, especially under appliances where there are leftover crumbs, it is essential to clean these areas properly;
- Use glass, metal, or thick plastic jars to store food, as pests cannot gnaw on them;
- Store sugar, coffee, and other foods that could harbor weevils in tightly closed containers;
- Devour food to ensure that small pests do not invade them. It would help if you also bought small quantities so as not to leave them lying around for too long in the cupboards;
- Store food in transparent packaging to examine the contents and check for the presence or absence of weevils;
- Avoid storing foods with holed packaging, as small beetles can sneak in or transfer them to glass or plastic jars.
Good to know
Measuring between 2 and 4 mm, the weevils can be seen with the naked eye. It has more than 50,000 species. To get rid of them effectively, they need to be identified.
Being able to fly, rice weevils are recognizable by their pale reddish-brown color, with four parts slightly lighter than their body. They love slightly warm corners.
Unlike rice weevils, wheat weevils cannot fly. Recognizable by their brighter reddish-brown hue, they proliferate, especially in areas with milder temperatures.
The weevil borers are fond of very wet wood or rotting. They are most often found in the bathroom.
The red palm weevil rhynchophorus ferruginous proliferates on the Mediterranean coast. This is the species that most closely resembles a beetle. It attacks trees that die within 2 to 5 years after its establishment. This pest is particularly fond of palm trees in Asia and Melanesia.
Some weevils attack flowers and vegetables in the garden. They dig holes in the roots, stems, leaves, fruits, or flowers to lay eggs. The larvae then develop there and feed on the plants, to dislodge them, plant irises nearby, as their smell scares weevils away. Otherwise, spot them with the naked eye, shake the infested foliage to recover them, then destroy them by throwing them into the fire.If not all methods of killing weevils are suitable, the use of an insecticide is mandatory. In this case, do not forget to ventilate the room and use the product with care. If possible, it is best to seek professional advice.