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Yeah, don't see why not. If you get a pack of tights and cut the crotch off so you've just got the two legs, you can stretch a toe/foot/leg over the bottom of a pot and pull it up the sides. Then you can tie it off at the stem and just leave the plant to dry out a bit. Obviously might not be feasible with your biggest plants if they're too big to fit into standard hosiery!
I use a gravel topping too (the aquatic stuff for fishtanks), but found that if I only sealed off the top, then the little fuckers would burrow in and out through the bottom drainage holes instead, especially as the moisture levels dropped and they all packed into the last viable band of soil. I had to block off top and bottom to fully get rid of them.
What if I cover with netting just the pot?