What is one of the advantages of inorganic arsenicals?

The advantage of inorganic arsenicals that makes it a noteworthy choice in wood preservation is that treated surfaces can be painted. This characteristic is essential in various applications since it allows for flexibility in design and aesthetic appeal, especially in outdoor structures like decks, fences, and similar constructions.

When wood is treated with inorganic arsenicals, it effectively penetrates the wood fibers, providing protection against decay and insect infestation while still allowing subsequent finishing treatments, such as painting or staining. This means that the preserved wood can seamlessly integrate into the surrounding environment and match the desired decor or style after treatment.

In contrast, the other options do not highlight advantages. For instance, toxicity to humans and strong odors would be considered disadvantages, as they pose health risks and unpleasant working conditions. Additionally, the requirement for extensive weather protection would also be a disadvantage, as it complicates the application and maintenance of treated wood. Thus, the ability to paint treated surfaces stands out as a significant advantage.