Trenac sands are hard to rinse. I always just got a 5 gallon bucket and added some sand to it. Then I slowly filled up the bucket until the water ran clear. Hopefully the sand wont run out with the water. This may happen if the sand is very small and light. Others ways, more time consuming, could be a fine strainer(dont let ur wife know) from the kitchen. If unsure about the sand I would just go ahead and rinse it.