small yellow balls in the soil of my planter

Question

What are the small yellow balls that are in the soil within my planter? When I squeeze them, they burst. Are they larva?

Answer 1

They are mushrooms. The following article should be of some help to you: https://www.gardeningknowhow.com/houseplants/hpgen/getting-rid-of-mushrooms-growing-in-houseplant-soil.htm

Answer 2

You don't mention the size of these balls. The above link will show you a picture of the little yellow mushrooms that are fairly common in houseplants. If, however, the balls are much smaller, about 1/16th of an inch, and rolling around free in the soil, not attached to anything, they are probably slow-release fertilizer pellets.