Can most robot vacuums handle a half-inch threshold?

Yes, most current robot vacuums can climb a 0.5-inch threshold without much trouble—that’s the standard height they’re designed for, with many listing a climb spec around 0.6 to 0.8 inches. The shape matters more: a beveled or rounded edge is easier than a sharp 90-degree lip. Older or budget models might struggle, but newer mid-range and high-end ones generally handle it. If it fails, a cheap adhesive ramp solves it.