Maxforce vs Advion Cockroach Gel
The two professional cockroach gels most pest controllers reach for in Spain. Maxforce (imidacloprid) is widely consumer-available; Advion (indoxacarb) is harder to source but performs slightly better against resistance-evolved Spanish German cockroach populations.
Quick Verdict
Pick Advion (indoxacarb) if you have a confirmed German cockroach problem in a Spanish kitchen — better resistance profile, slightly faster kill, more secondary transfer to nest. Pick Maxforce if Advion is hard to source where you live, or for American/Oriental cockroach species where the difference matters less. Spanish consumers can also buy Ecogel — the same imidacloprid active in a consumer package.
Side-by-Side
| Criterion | Maxforce Gel | Advion Cockroach Gel |
|---|---|---|
| Active ingredient | Imidacloprid (neonicotinoid) 2.15% | Indoxacarb (oxadiazine) 0.6% |
| Manufacturer | Bayer (Envu) | Syngenta |
| Visible kill | 36–72 hours | 24–48 hours |
| Secondary kill (nest transfer) | Good | Excellent |
| Resistance in Spanish populations | Partial (reported since ~2018) | Not documented in Spain |
| Consumer availability | Wide (Amazon.es, ferreterías) | Professional channels only |
| Price per 30g syringe | €13–18 | €18–25 (pro distributors) |
| Apartment coverage (30g) | 80–100 m² | 80–100 m² |
| Pet/child safety (placed in voids) | Safe | Safe |
Which to Pick by Situation
German cockroach (kitchen)
Advion first if available. Falls back to Maxforce/Ecogel if Advion sourcing is impractical.
American cockroach (from drains)
Maxforce/Ecogel + drain covers. Gel kills the home-entering individuals; gel choice matters less because the colony is in the sewer.
Recurrent infestation despite treatment
Advion — likely resistance issue. Switch active ingredient. Combine with boric acid powder in voids.
Holiday rental between guests
Maxforce/Ecogel — easier to keep on hand, can be applied quickly between stays, 3+ months residual.
See our full best cockroach products in Spain guide for sprays, traps, powders, and combination strategies.
Frequently Asked Questions
Is Maxforce or Advion better for German cockroaches in Spain?
Advion (indoxacarb) is better for German cockroaches because indoxacarb activates through metabolic conversion only inside the insect, which means cockroaches do not detect it as a toxin and feed freely. Maxforce (imidacloprid) is still effective but Spanish German cockroach populations have developed partial resistance to neonicotinoid actives like imidacloprid since the late 2010s.
Why is Advion gel hard to find in Spain?
Advion (Syngenta) is sold through professional pest-control distributors in Spain (Killgerm, Fitoagricola, Multiplag) rather than consumer channels like Amazon.es. Some distributors require ROPO/FITOSANITARIO certification to purchase. The consumer-marketed alternative is Maxforce or the Spanish-domestic Ecogel — both available without certification on Amazon.es.
How fast does cockroach gel bait work?
Both Maxforce and Advion show visible results in 24–48 hours and reach colony elimination in 5–10 days. Advion is slightly faster on average because indoxacarb metabolises into its active form quickly post-ingestion. Maxforce can take a day or two longer in Spanish-resistance populations.
Does cockroach gel work on American and Oriental cockroaches?
Yes, but with caveats. American and Oriental cockroaches are sewer-dwelling species that enter via drains — gel bait kills the individuals that enter your home but does not address the colony in the sewer. For these species, combine gel bait with drain covers and consider sewer-line treatment through your comunidad de propietarios for apartment buildings.
How much gel bait do I need for a Spanish apartment?
A single 30g syringe of Maxforce or Advion treats a typical 80–100 m² Spanish apartment. Apply pea-sized dots (or smaller) every 30–60 cm in cockroach activity zones: under sinks, behind fridges, near plumbing penetrations, inside cupboards. Reapply after 8–12 weeks for sustained colonies; one application suffices for minor problems.