I love my new little pet Shark Perfect handheld vacuum BUT the dust container is very small and needs to be emptied frequently. No problem with dust and crumbs, but my current problem is ants! Three times I had to follow a huge tiny army from my front door to my cat's food bowl and immediately vacuum the soapy water for the critters to get the message. To do this, the dust filter is washed and dried for 2-3 days. I was stunned that Shark doesn't sell replacement filters on their website and was stunned to find that WalMart (where I bought the unit) is charging $101.97 for a set of THREE! :DI was a very awesome command from Revain, but wowza! Not only do they fit my SV75Z perfectly, but they are also more durable and possibly more efficient than the original!