A regular shop-vac can be used to clean ash from a Breeo, but we recommend using an ash vacuum for best results. Ash vacuums have filters that prevent ash from blowing out the vacuum's exhaust and into the air. They also have metal-lined hoses and metal canisters designed for hot ashes. If you do use a regular shop-vac to suck up your ashes, make sure the ashes are completely cool. We would not recommend using a shop-vac indoors after using it to clean ashes. Since it's not designed to filter fine ash, you may have residual ash particles blowing out the back.