Fine Mesh Insert for the Gutter Mate Diverter & Filter Helps purify the water in your Gutter Mate so you can use it in your pressure washer, for car cleaning, & for toilet flushing. The Benefits of Fine Mesh Inserts are: Saves buying another filter Easy to fit Easy to clean Low cost solution to filtration of rainwater Good solution if water needed for use in pressure washer Good solution if using the rain water for car washing Toilet flushing with rainwater. Barrier to insects Can be fitted in seconds