Wall made of aerated concrete and facing with facade bricks. Ventilation gap is 4-5 cm. Foreman dissuades put vents, his opinion is that all insects will accumulate: ants, beetles, wasps, etc. The Internet is replete with information that they must be installed. In fact, I see that they put them little where.
What do you advise? And what to do with insects? And with the penetration of moisture from the street?
I support the version that it is necessary to install air vents. In addition, they already have protection against insects.