Handisacs can be emptied and reused multiple times (three to six times approx.) depending on how clogged the pores become with fine dust and the integrity of the filter paper, seams, etc.
Genuine Hoover Handisacs, aka type-W bags have out-of-production since the mid 1980's and, to the best of my knowledge, generic versions are long gone as well.
Because of this finite supply, we all, of course want to maximize the life of our Handisacs through gentle treatment and as many re-uses as possible.
When all else fails, I have successfully used type-C, bottom-fill bags on the handisac mounting system.
Two ways:
1) Remove the bottom two staples from the type-C bag and skooch it all the way down onto the handisac fill tube and clamp on.
2) If and only if your Handisac fill tube does NOT have a flange or inner metal lip at the opening, a type-C bag can be mounted conventionally on a standard bottom fill fill-tube and then can be inserted into the Handisac fill tube. If your Handisac tube is flanged at the opening - see option "1" above.
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