There are few Hoya pests. The common garden pests are the aphids, mealy bugs, red spider mites and scales. These pests can be controlled with insecticides. If you have a small collection, do a check on the plant for pests once a week. You can remove the insects with rubbing alcohol. Simply rub the pest off with a swab. During the summer, outdoor ladybugs and praying mantis can held rid the plants of some bugs. When getting new plants, it is always advisable to keep them isolated for about 5 weeks to watch them. If the plant has pests, you can treat the plant and not infect the rest of your plants. The most important things are to just observe your plant. Keep up with the checking for possible bugs. What are you waiting for, buy a hoya today….