Running without a filter usually helps in such cases. But if I were in your place, I'd take care of the yard first. I guess the problem is in uncontrolled weed which grows too fast. I sometimes have the similar problem, but the weed killer spray usually helps. It'd be also extremely helpful to use weed mowers or weed pullers. You can read at https://www.growgardener.com/best-weed-puller/ about the best tools available for today. I think you can find there smth that would be practical for you. P.S. Be careful next time with kids.