Yep - agree - sealed poly bag round the filter works a treat - no spills. Then clean of with a rag. Leave a rag underneath until you get the new one installed - coz you get drips! IMHO - dont punch a hole in filter to drain it - this creates sharp edges which when the filter touches the bag pierce it and cause a mess!... I know...lol Also...dont forget to wet the new sealing ring with a little oil too - when you install the new filter.