This is the equatorial regions. There is no water ice or dry ice in the air or on the surface, at all.

However, it seems too many people watch too many modern sci-fi movies and think all you need to do is regulate the transmonitor in the electron tube and the resulting energy will blow debris away. :)

Fixing this on a robot tens of millions of miles away on an alien planet is not simple. The science and engineering teams have apparently thought this out in detail in design, and are now very carefully attempting it in practice.

One point: They don’t want the material to fall in the hole, as that will then block its use for good. They want to dislodge it so that it falls out entirely. If you look close at the two large pieces, the top one seems weakly balanced in the air, and might fall out with little problem. The bottom one I think will be more problematic.

Keep in mind that the atmosphere is fairly dry, so if it is frozen to the structure it is probably not water ice but may be carbon dioxide ice (dry ice). Is Perseverance cold enough for dry ice to form? It doesn’t look like it.

Remember, it’s 0.3G. And while there is no scale, it may be unlikely there is rise enough nearby to move the material. And it’s cold. The material may be frozen to the structure.