Succulents are relatively low-maintenance and resistant to pests, but they can be affected by some common succulent pests and problems.

1. Mealybugs

These are small, white, cottony insects that can be found on the leaves and stems of succulents. They suck the sap from the plant and can cause stunted growth and deformation of the leaves.

2. Aphids 

These are small, green, or black insects that can also suck the sap from succulents, causing distortion and discoloration of the leaves.

3. Scale Insects

These are small, brown, or black insects with a hard shell that can attach themselves to the leaves and stems of succulents and suck the sap.

4. Spider Mites

These are tiny, red or green spiders that can be found on the underside of the leaves. They can cause yellowing and stippling of the leaves.

5. Root Rot

This is a common problem in succulents that are overwatered or planted in soil that doesn't drain well. It can cause the roots to rot, leading to the death of the plant. 

6. Powdery Mildew

This is a white, powdery fungus that can affect the leaves of succulents, causing them to turn yellow and drop off.

To prevent these pests and problems, it's important to provide the right care for your succulents, including proper watering, light, and soil conditions. If you do notice any pests, you can treat the plant with an insecticidal soap or neem oil. For fungal problems, you can use a fungicide. Always follow the instructions on the product label and test it on a small area of the plant first to make sure it doesn't cause damage. To prevent root rot and mold growth, always make sure you water your succulent with a water bottle or bottom water to avoid drowning the succulent/getting the leaves wet.