I throw in Cheerios or popcorn to see if they know to vacuum that up rather than avoid it. I also run them over oatmeal and flour to see how well they pick up fine debris and have them tackle both thick and low-pile carpets. I watch to see how https://top-3-automatic-vacuum-cl31086.theblogfairy.com/33821419/como-top-3-automatic-vacuum-cleaners-você-pode-economizar-tempo-esforço-e-dinheiro