When did you stop baby from using swing? When should I have a yard sale?

My son is 21 pounds and the weight limit on the rainforest swing is 25. When will he reach that weight? He barely uses the swing now. Also, how long did your baby use the exersaucer and jumperoo? I want to have a yard sale soon before it gets too hot, but I am trying to figure how much longer he will use these things.