Hello Meh2024.
Lawn mowers mulch grass by lifting the grass clippings into the deck and cutting them into fine pieces before they drop back into the ground, because they need to be cut many more times than they do for bagging and side discharge, airflow is critical to the process. In general, try to mulch when you are taking off no more than 2 inches of grass for the best results. That lets the blade speed stay up on just about battery-powered mower and get those fine pieces that send nutrients back into your lawn. You will typically get much better mulching results if you can cut when your grass is dry. That leaves the clippings lighter, so they stay up in the deck longer and do not stick to the sides. Mulching grass when it is wet means the blade can’t cut the clippings as small before they drop out. And the wetter the grass, the more challenging it becomes. Your satisfaction is important to us, and we would love to chat with you further should you have any additional questions or concerns. Please start a Live chat on www.greenworkstools.com or give us a call at 1-888-909-6757 (1-888-90WORKS).