At your home, there are different types of gutter guards that need proper cleaning. You need to get gutter cleaning done with professionals only. With proper cleaning, you need gutter installation only once in 15 years.
For maintenance, brush guards are completely worst. Along with bouncing off organic materials and leaves, they also fall on the ground. In the case of these guards, much of the debris gets caught in the brush and it eventually works to the mid or bottom of the gutters and it causes a big clog. You may want to clean debris properly if you have plenty of leaves and organic matter collected into the gutters regularly. They need to be easy to clean and lift underneath while cleaning the gutters.
These are possibly easy to clean and they can be taken up to expose what is under them and it allows proper cleaning. There is literally no trouble to replace them to their previous position after cleaning is done.
They can collect a lot of mess over time like brush guards as debris and leaves can get over the edges and under the foam. You need to lift the foam up and clean when you go along, without removing any large pieces at any time.
They may be the hardest type of gutter guards for proper cleaning as they can be installed properly.