I've been reading about preventative measures to keep my indoor garden free of pests. And from what I've read so far. A very easy way to get them (especially the cannibis spider mites) is by visiting another garden, from pets or walks in the woods. I have four local hydro stores from whom I've bought soil from (ff happy frog) and every one had fungas gnats as soon as the water hit the soil. 3 of the stores have 4×4 tents set up with house plants growing in them. They also keep the doors open in the summer. Should this be a concern? Obviously there are people in and out of the store coming right from their own gardens all the time. Seems to me a hydro store would be a perfect place to make contact and bring some home to my garden. Has anyone ever run into this problem or have an opinion? Thank you