Even if there are additional pests that may harm your succulents, the majority of infestations will be caused by one of these four bugs.
Mealybugs
The fluffy, white insects known as mealybugs are typically found in big numbers. Although you might mistake them for a spiderweb up close, they have a distinct, cottony texture.
They adore living in cracks and other secret, safe places. Check the areas of your succulents where the leaves meet the stem; this is a preferred location.
Fortunately, mealybug infestations are fairly simple to manage. You can just unpot the succulent and thoroughly rinse it out with a strong stream of water if the infestation isn’t too bad. That ought to be sufficient to remove all of the mealybugs.
You should repot the plant in new soil because certain species lay their eggs in the soil. If you’re unsure whether your soil is contaminated, you can bake it at 200 degrees for a couple of hours to eliminate any hidden pathogens.
Apply rubbing alcohol to the affected areas of the plant if water is ineffective or you don’t want to repot the plant. The insects will be instantly killed by regular 70% isopropyl alcohol, but your succulent won’t be affected at all. Try spraying the plant liberally with alcohol after filling a spray bottle with it.
Scale
On the plant’s surface, scales take the form of rounded or oval bumps. They are very little, measuring no more than one centimeter or so, and are always dark in color.
It should be immediately clear why these insects are called scales since they are protected by a hard, smooth shell. When they reach the adult stage, they choose a location (typically along the stem) and stay there for the rest of their lives. They are fairly resistant to chemical treatments and almost impervious to predators.
However, they usually spread very slowly. If you notice a few of them on your plant, you may remove them quite quickly by scraping them off with a blade or your fingernail. If there are numerous, you should use a potent insecticide.
The solution is neem oil. Neem oil is frequently marketed as an extract and needs to be diluted before usage, so be sure to read the instructions carefully. Additionally, keep in mind that if the oil is on the plant and under strong, direct sunshine, it could result in sunburns because it is an oil.
Neem oil should therefore be used at night. That also lessens the chance of accidentally catching helpful bugs, most of which are active during the day.
Spider Mites
Spider mites are extremely hardy because they can overwinter in the soil and reproduce swiftly. They flourish in the same hot, dry environments that succulents do, unlike the majority of pests.
The tangled, wispy cobwebs that spider mites build around themselves to ward off predators make them very easy to recognize. They come in a variety of hues, including brown, black, and red, and many of them are so tiny you would need a magnifying glass to see them. Look for webs on the undersides of leaves, where they almost always congregate.
Although they pierce leaves to get the juices, the damage is done gradually. For a plant to actually be in danger, spider mites would need to completely cover it. To identify spider mites, look for random spots of yellow, brown, or gray scarring on leaves.
Washing away their protective web covering with vigorous water is the first step in getting rid of them. Apply neem oil next as you would for scaling. Treatment with isopropyl alcohol is also effective. An additional choice is to use insecticidal soap, which you can either purchase or manufacture by combining a few drops of dishwashing detergent with a quart of water. Use a spray bottle to liberally apply the solution.
Fungus Gnats
In reality, fungus gnats are merely a nuisance and not even a pest. However, they are very common and should be mentioned.
They resemble fruit flies in every way, more or less. perhaps a little smaller When you brush by them, they will occasionally take off in a swarm when they are resting on the leaves of your plants.
The adult gnats you see flying around have a relatively brief lifespan and barely consume any food. They lay their eggs in wet ground. The eggs develop into larvae that primarily consume decaying matter but may eat new, sensitive roots if given the chance.
Although fungus gnats are not very harmful to your succulents and cacti, they are a sign that your plant is overly damp. Give the plant extra time to dry out in between waterings or switch out the soil with one that is looser and faster draining.
It is quite simple to get rid of fungus gnats. The soil will eventually die if you thoroughly dry it up (without any water for around two weeks). The eggs and larvae will shrivel up, and the adults will eventually pass away. If you place a fan to blow over the plant, the adults won’t be able to return and deposit eggs because they are extremely slow flyers.
Water your plant with an alcohol or insecticidal soap solution and fully wet the soil for a quicker fix.
That is the quick-and-dirty method for removing bugs from your cactus and succulents. Do you have any questions concerning any other pests? Do you require more information? Tell us in the comments section below!
How are cactus mites killed?
Even while a spider mite infestation may not be as severe as it first appears to be, it should always be treated before it spreads and kills the entire plant.
Spider mites are minuscule pests that resemble moving dots that eat by piercing plant leaves and sucking out their sap or juice, leaving behind yellow spots or stipples as a byproduct.
As soon as you notice spider mites on your cacti, you must begin treating them. You can use the following spider mite removal techniques to get rid of spider mites on cactus plants:
Neem Oil
Insecticidal and pesticidal qualities of neem oil suffocate spider mites on cactus plants, stop their growth, or kill them if they have already gotten deeply embedded in the plant tissues.
Neem oil should be combined with water at a ratio of two teaspoons per one quart (liter) of water in order to be used.
Fill an atomizer or spray bottle with the mixture, and begin misting each cactus leaf—including the stems—until they are totally submerged in the spider mite remedy.
Insecticidal Soap
Using insecticidal soap on cacti plants to prevent spider mites is another all-natural method that has been demonstrated to be successful. Spider mites are killed with insecticidal soap, but other insects, spider mites, natural adversaries, and pollinators are not harmed.
Spray the spider mite-infested leaves with a solution made by combining one teaspoon insecticidal soap with one gallon of water in a spray bottle.
Horticultural Oil
Another all-natural remedy for controlling spider mites on cactus plants is horticultural oil spider mite treatment.
This spider mite control approach coats leaves with a protective layer that suffocates spider mites by preventing them from getting to the plant’s surface.
For each application of this spider mite treatment, combine one tablespoon of horticultural oil with two gallons of water in a spray bottle and give it a good shake.
Spray the whole surface of your cacti, including the stems, fissures, and any other area where spider mites are likely to be present, after you have finished combining your mixture.
Predatory Mites
Introducing predatory mites that feed on spider mite eggs, larvae, nymphs, and adults is another efficient method for getting rid of spider mites on cacti plants.
These predators will eliminate spider mites without endangering pollinators, other insects, or the natural enemies of spiders.
To enhance spider mite mortality, you must keep releasing predatory mites every several days.
High-Pressure Water
Another spider mite treatment technique you can employ to get rid of spider mites on cactus plants is high-pressure water.
Spider mites will be forced off the leaves by the high-pressure jet and launched into a pail of soapy or plain water, where they will finally drown and perish.
Because some spider mites may have survived after being driven away from your plant’s leaves by wind, you might need to repeat this spider mite treatment in order for it to be completely successful.
Beneficial Insects
Introducing beneficial insects like ladybugs, green lacewings, and predatory wasps, which are spider mites’ natural enemies, is another effective spider mite treatment strategy you can apply.
Ladybugs consume spider mite eggs, while the other two, depending on their species, consume spider mite larvae, nymphs, or adults.
The population of this parasitic predator on your plant must be rebuilt over the course of a week until it is ready for the return of spider mites the following season.
Alcohol and Water
The only way to cure spider mites on cactus plants if they have already gotten deep inside the plant’s tissues is to pour alcohol or rubbing alcohol mixed with water at a ratio of one part rubbing/isopropyl alcohol to three parts water.
Directly apply this mixture to any area that has been afflicted with spider mites, covering it completely. Alcohol will cause the exoskeleton of the spider mites to dry out, leading to their desiccation and eventual death while keeping the leaves of your cactus unharmed.
Dish Soap
You can also use dish soap with water at a ratio of one teaspoon per quart (liter) of water to cure spider mites.
Then, fill an atomizer or spray bottle with the mixture and begin dousing cactus plants in spider mites until they are totally covered.
Dish soap will suffocate and kill spider mites by rupturing the integrity of their exoskeleton, which ultimately leads to desiccation and death.
Diatomaceous Earth
Dusting your plant’s leaves with diatomaceous earth is another spider mite treatment option you can employ if the spider mites on your cacti plants are still in the nymphal or larval stage.
They will become dehydrated and die as a result, leaving other insects, such pollinators, alone. This spider mite treatment must be used again every two weeks until all spider mites are eliminated.
Mouthwash
You can also use mouthwash mixed with water at a ratio of one teaspoon of soap per quart (liter) of water as a treatment for spider mites.
Spray the mixture on cactus plants until they are thoroughly covered in spider mites by placing it in an atomizer or spray bottle.
By destroying the integrity of the spider mites’ exoskeleton, mouthwash will suffocate and kill them, causing desiccation and eventual death.
Why do bugs live in my cactus?
Cacti and succulent houseplants occasionally experience insect pests, but the majority of issues are bacterial or fungal illnesses brought on by overwatering. Scale, mealy bugs, and root mealy bugs are the three most prevalent pests. Pests like spider mites and fungus gnats are less frequent.
What causes cactus mealybugs to die?
When you detect mealy bugs on your succulents, the first thing you should do is quarantine the affected plants and relocate them away from other plants. Check the healthy plants for any indications of mealy bugs.
After that, be ready to clean your contaminated plants by removing them from the pot and giving them a thorough rinsing under running water. In hot, soapy water, wash the pot. Replant with fresh soil after allowing the plant and pot to dry out. Old dirt should be disposed of in the regular trash, not the green bin.
If you don’t instantly have ready-mix succulent soil at your home, you can put the soil in an oven-safe container covered with foil and bake it for at least 30 minutes, or until the soil reaches 180 degrees Fahrenheit. After letting cool, plant again. Since there may still be mealy bug eggs in the old soil, we advise getting new soil.
Now let’s get to the most crucial step: mealybug elimination. Pesticides made of chemicals are generally the first thing that springs to mind. We don’t advise using them, though, as some of them can be highly damaging to succulents. Here are some secure choices we’ve tried and think are really helpful:
Neem oil and soap mixtures or rubbing alcohol (isopropyl alcohol) come first. The cheapest and most efficient approach for controlling aphids, mealybugs, and spider mites is to use 75 percent rubbing alcohol. Simply give the succulents a good spraying and leave them. The bug will start to turn brown, which indicates that it is dead. The plants won’t be harmed by the alcohol because it will entirely evaporate in a short period of time. Perform this each week until you no longer notice any bugs.  
Another secure insecticide that can be applied directly to outbreaks is neem oil. It has the ability to instantly eliminate all stages of mealybugs. Neem oil at a concentration of 5% in water is combined with a few drops of soap before being sprayed all over your succulent. Keep in mind that using concentrated neem oil could burn your succulents.  
If you don’t have a spray bottle, you might paint-brush any area where mealy bugs are present. After a few hours, water the plant to remove the dead insects. You can readily find rubbing alcohol and neem oil online or at your neighborhood pharmacy. To prevent water stains or sunburn when using neem oil or rubbing alcohol, be sure to keep the plant out of direct sunlight. For a few days, keep them away from the window and direct sunshine.  
If there are still some mealy bugs on your plant, check it again and continue the procedure for a few days. Then, as a preventative step, spray once again after a week. Neem oil can also be sprayed into the soil to eliminate any bugs or eggs that may be lurking there. Put the plant back in its original location and continue inspecting every three weeks if mealy bugs don’t recur after thoroughly checking and spraying for a few weeks.
Neem oil and rubbing alcohol are relatively secure, but there is a danger they could harm your succulent.
So we advise utilizing ladybugs as another natural cure. Yes, you heard correctly! These adorable ladybugs are all-natural enemies of mealybug and other troublesome pests. However, we advise utilizing ladybugs only as a preventative measure and when your plant is in the early stages of infestation.