I have these really small grey or seetrough creeps on the floor of my growroom.. and every time i put my finger near them they jump away.. So my question is..can spider mites jump? havnt been able to identify them close enough but do oyu think they are harmful? they live on the floor and would have easy access to my plants since i grow in soil .. but my plants look fine.. got some plants at last week of flowering and one wich is about to start flowering and I have always had a few of these things in my growroom.. they are really really (like 0,2 mm, but you can see them) small too. Or are these somekind of fleas that just live in symbiosis without harming plants.. because they have to feed on something 
