We use them on carpet day in and day out without issues. Now for a particle surface I would believe that the strafe functionality of the wheels would be null. The way the strafing works is by rotating the front wheels the opposing direction of the rear wheels. A particle surface would just get pushed out of the way (like a car stuck in sand) and would dig down.

Now if you redesigned the wheels with a hard material with diagonal groves instead of rollers then you could in theory travel in the particle or even a moderately deformable surface (like a high pile carpet) with less dig and more slide.

@All who don’t know the wheels are Mecanum design. With proper controls you can move in 3 degrees of freedom on a surface (Forward/Backward Rotate and Left/Right). They are great for mobility but no so much for pushing power. If you try to push something the rollers will .. well roll reducing your max forward force to that of the friction of the individual rollers on their carrier. That being said you could adjust the friction of each of the rollers but then you loose power strafing.