Claims against testing
Long-hair and pet-hair tangle: which robot vacuum brushes stay clear over months?
Hair wraps around brushes over weeks of use. This page sets out what each maker says about how its brushes resist tangling and what it says about replacing them.
This page checks
- Main brushThe roller design the maker describes
- Side brushWhether the maker names an anti-tangle design
- Hair cuttingA cutting brush, if the maker offers one
- Replacing brushesInterval and price, where the maker gives them
Roborock
Where to buy
Shown as out of stock at Roborock's US store
Roborock app update adds mop-pad scheduling and dock cycle controls
iRobot
Where to buy
Full specifications18 figures on record · 13 differ
Some links earn Robovations a commission. Nothing on this page is ranked by it.
S7 Max Ultra
Roomba Max 715Brush by brush
What each maker says about hair and tangles
Both makers describe a rubber main brush made to resist tangling. Only iRobot names an anti-tangle side brush. No hair-cutting brush was found for either. Only iRobot gives a replacement interval, every 3-6 months. No months-long independent hair test was found.
All-rubber
Maker says its "Durable All-Rubber Brush" easily cleans up hair without tangling.
Roborock US product pageDual rubber
Maker lists "Anti-tangle Dual Rubber Brushes" in its specifications.
iRobot US product pageProduct page shows replacement side brushes. No anti-tangle wording found on the pages opened.
Roborock US product pageAnti-tangle edge brush
Maker names an "anti-tangle Edge-Sweeping Brush" with an upgraded side brush design.
iRobot US product pageNo cutting brush found on the Roborock product pages.
Roborock US product pageNo cutting brush found on the iRobot product page.
iRobot US product page$22.99main brush
Price on the S7 Max Ultra page. Side brushes, 2 pieces, $15.99. No interval found.
Roborock US product page3–6 monthsas needed
Maker says to replace the filter, debris bag and brushes every 3-6 months, as needed. No brush price found.
iRobot US product pageSame on both: no months-long independent hair test was found, so these rows show maker design claims only.
Fit CheckS7 Max Ultra and Roomba Max 715 carry the same verdict on every condition their Fit Checks share, so a fit control would give the same answer for each. Each robot’s own page has its full Fit Check.
Everything else
Where they land among 259 robot vacuums
Only the measures on which these two differ. The bar is the whole category; the block is the typical middle half; the tick is the median.
Sources
Where every figure comes from
- S7 Max Ultra · us.roborock.com product pages, checked 2 Oct 2026
- Roomba Max 715 · irobot.com US product page, checked 2 Oct 2026
Each robot's own maker pages were opened and quoted. A cell reads Not found when the pages opened held no statement; that is not a claim that the feature is absent.
Questions
What readers ask
Does either robot have a hair-cutting brush?
None was found. The Roborock S7 Max Ultra and iRobot Roomba Max 715 pages opened showed no cutting brush.
How often does iRobot say to replace brushes?
iRobot’s Roomba Max 715 page says to replace the filter, debris bag and brushes every 3-6 months, as needed.
Is there proof either stays clear for months?
Not from the pages we opened. These rows show maker design claims. No months-long independent long-hair test was found for these two.
Common questions