Generally, it is not necessary to remove old mulch before applying a new layer. As organic mulch breaks down, it enriches the soil with nutrients. However, you should remove the old layer if it shows signs of fungus or disease, which can be common in moist areas, or if the total depth is already too thick. Avoid letting the total mulch depth exceed 3 inches, as this can harm plant roots. If you do remove old, disease-free mulch, it can be added to a compost pile.

A pre-emergent herbicide is the most effective way to avoid stickers growing in your yard. However, if some manage to make it through, a post-emergent herbicide is the most effective way to kill them. However, environmental concerns exist when using chemicals on a lawn. Try vinegar or baking soda applications to kill sticker plants for a more natural yet still effective method.

Reducing household waste is the best way to save money on junk removal costs in the long run. Reusable kitchen, pantry, and cleaning supplies will make a large dent, as will creating an easy compost and recycling system in your home. Additionally, create an ongoing practice of recycling, donating, or repurposing items that are ready to go.

For minor unevenness, you don't necessarily need to remove grass before leveling. You can apply a topdressing mixture to fill in low areas and even out the surface. However, for more significant unevenness or deep depressions, it might be necessary to temporarily remove the grass to ensure proper leveling and soil compaction. After filling and leveling, you can replace the grass or consider reseeding the area.