If there are a lot of larvae in the soil, and you assume that the plant will withstand the transplant, then it is best to do this by putting the flower into a new, pre-cultivated land. To do this:
Loosen the soil and carefully pull it out.
Then manually or with a small brush, clean the roots of the contaminated soil.
Quickly rinse the roots with water or one of the remedies.
Finally, transfer the plant into a clean pot with uninfected soil. It is when you will need the baked soil. Put it in the oven at a temperature of 100-120 degrees for 1 hour, and then restore the microflora with some kind of fertilizer.