Okay, let's get the obvious out of the way. Dri-Kule Hygenic Pipe Filters aren't pipe filters, but that doesn't mean that they aren't useful little items. These small wire mesh baskets are meant to drop into the heel of the chamber. Then you pack your pipe as you normally would. The benefits are that the mesh will keep bits of tobacco from making their way up the airway, it allows for better air flow, helping to avoid over-packing and can contribute to a drier, cooler smoke. They can be used a number of times, so they're extremely economical.