Sort through half bottles of this and that and combine like bottles. Give away cleaners you don't use- to family, friends or the food bank. Get rid of rags too that are ready for the garbage. If you have a maid service if might be a good idea to just let them bring all their own cleaners and get rid of all those cleaning supplies that are just collecting dust.
I try to keep a stockpile of cleaners. When things are on sale and I have coupons I'll buy extra. At times too I review products and have some new things to try. But this is how my cleaners are looking right about now.