Harbor Freight makes a pneumatic gasket scraper for $24. They work pretty well. I build dry ice manufacturing plants. As stated don't touch it, it will burn you. It's -109f. Also use in well ventilated area. Do not put it in your car with windows up, you may pass out. Do not not put it in a sealed container it can explode. If you can source the pellets you could spread them on the floor. Search Continental Carbonic and give them a call. When you open a co2 fire extinguisher The white stuff that comes out AKA "snow" is dry ice.
https://www.harborfreight.com/6-piec...saAqblEALw_wcB