Additionally, the temporal perspective of the remediation process and its impact on the environment are also considered. The data presented in Table 2 show that the effective methods for remediating mercury-contaminated soils vary. The results of projects described in the literature, undertaken to remediate various areas contaminated with mercury and other metals, indicate that remediation methods should be selected individually, depending on their advantages and disadvantages, as well as the type of site and soil to be remediated. For example, during the reclamation of agricultural soils, thermal desorption should be applied with caution because excessive thermal decomposition resulting from the use of high temperatures in the process of mercury removal from soil may lead to the degradation of organic matter in the soil, thus altering its structure and rendering it unsuitable for agricultural use. On the other hand, during soil washing and the application of chemical stabilization techniques, the possibility of secondary soil contamination from chemical reagents used in the process should be considered. It should also be noted that the chemical stabilization of mercury in soil only changes the form of the mercury present in the soil (usually to a less harmful one). Another aspect to consider when using chemical methods is the necessity of monitoring the effectiveness of the remediation process, and the reagents used should be added in such a way that the remediation process remains effective over time [19; 24; 25]. Information about the speciation of mercury in soil is crucial for determining the appropriate remediation method. For high concentrations of bioavailable mercury in the soil, methods such as soil washing or phytoextraction are required. In cases of low bioavailable mercury concentrations, the availability of the metal should first be increased to facilitate the use of these methods. For soils contaminated with elemental mercury, methods such as stabilization (S/S), vitrification, and immobilization are necessary. On the other hand, for soils contaminated with large amounts of biologically unavailable mercury, high-temperature mercury release methods (if technically feasible) seem to be the best option [2; 17; 19; 24; 25]. Effective mercury soil cleanup processes (acid washing, thermal desorption, or electrokinetic remediation) must be conducted in high-capacity facilities to be cost-effective, where large volumes of soil can be treated. The use of ex situ methods requires transporting contaminated soil, which further increases the costs. If soil contamination affects small areas, it is preferable to remediate on-site (in situ methods). However, this requires installing the necessary equipment (low-temperature desorption tunnels, electrodes for electrokinetic remediation, scrubbers, pumps, and absorbers) and is often economically unfeasible or even impossible due to industrial infrastructure or safety regulations. The stabilization of mercury in soil, unlike the methods for neutralizing mercury discussed above, does not involve removing mercury from the soil but rather chemically or physically binding it. These measures reduce the mobility of mercury, thus decreasing its leaching to an acceptable level. The methods used to stabilize mercury in soils or waste can be categorized into three groups: methods that involve substances containing sulfur ligands, methods with reducing agents, and methods with the use of substances with absorbent properties. As a result, mercury in the second stage of oxidation is classified as a weak Lewis acid and readily combines with sulfur to form a solid compound, HgS (very poorly soluble in water and much less volatile than other mercury compounds, making it less harmful to the environment, health, and human life) [2; 17; 25; 26; 29]. Stabilization is typically used when the mercury concentrations in soil are lower than 260 mg/kg [17; 28; 37; 39]. Sulfur, fly ash, Portland cement, dolomites, zeolites, and nanomaterials can all play a stabilizing role [2; 25].