350 Micron nylon strainer with string. When the strainer is clogged just pull the string and you will clear the strainer. The strainers come in three different meshes. (200, 350 and 1000 microns).

It is a very popular, flexible and economical solution.
Fits any size pail from 32cm to 90cm or more. Can also be placed on smaller pails, but it will not stand as firm.
Does not include a stand, bought separately!