Abstract: A single use disposable package formed from a corrugated paper or fiberboard or other paperboard blank made into a six-sided box for containing cat litter. The package is used in the open position where the top section of the box is held rigidly by the mutual engagement of tabs and slots formed by perforations in the top sections. One top section is perforated and scored to enable part of that top section to be folded downwards and inwards to make an adjustable-sized opening for the entry and exit of a cat.

Abstract: A method for the solidification and containment of sludge from an oil reclaiming process to permit environmentally safe storage disposal of the sludge and particularly electric transformer oil containing PCB's. In the process, the sludge or oil is mixed with fuller's earth in a weight ratio of at least 40:60 of fuller's earth to sludge or oil. The fuller's earth has a particle size not greater than -4 mesh to 0 mesh range and a moisture content of less than 12%. .[.The mixture is allowed to harden to a paste like solid material and conveyed to a conventional land fill storage disposal site..].