Can't tell what is the tiny white bug, but the web could be a concern. First, make sure it is not a spider web (if so, should be np). It could be mites thou, they are very tiny and make webs.

If spraying with anything, keep plant out of full sun. Maybe that's what was problem with agavoides? Day is usually enough.

Thanks Rina. I'll google what mites look like. This was a threads width, longer than wide and crawling fast. Solid white. Thanks again!

I just rechecked the plant, the alcohol did nothing, I think they got drunk and had a party! These are white and moving fast! I'm going to buy a miticide I guess.they are in the very center of the rosette, do you think DE would hurt if I put some in there?

Whenever I spray anything I keep out of the sun for about a week. I'm having sort of the same problem. I have an echie that has webbing and what looks like meallybug issues, but I dont see meallies. It's strange and it's affecting the center growth. I sprayed with neem oil. So we will see. I can't believe your white bugs just got drunk off the rubbing alcohol treatment you did. What jerks;)!

I just bought 3 in 1 miticide/fungicide and also safer spray. I'll use today and hold out of sun got a week.